# What is CVE-2019-1559? > CVE-2019-1559 is a medium-severity flaw (CVSS 5.9) in OpenSSL, published on 27 February 2019. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 17%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.precursorintelligence.com/what-is/cve-2019-1559 ## At a glance - **Verdict:** Fix this soon. Not confirmed as exploited yet, but serious or likely enough that it should not wait for a quiet month. - **Precursor Intelligence risk score:** 28 out of 100 (Low); action: Monitor. Kept up to date as the evidence changes. - **Severity:** Medium (CVSS 5.9 out of 10) - **Known to be exploited:** No, not on the list of flaws known to be exploited today - **Chance of use in the next 30 days:** 17% (latest exploit-likelihood forecast) - **Published:** 27 February 2019 - **Record last updated:** 7 November 2023 - **Main product:** OpenSSL - **Affected products:** 90 ## What is CVE-2019-1559? In plain terms It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can read data. ### The official description If an application encounters a fatal protocol error and then calls SSL_shutdown() twice (once to send a close_notify, and once to receive one) then OpenSSL can respond differently to the calling application if a 0 byte record is received with invalid padding compared to if a 0 byte record is received with an invalid MAC. If the application then behaves differently based on that in a way that is detectable to the remote peer, then this amounts to a padding oracle that could be used to decrypt data. In order for this to be exploitable "non-stitched" ciphersuites must be in use. Stitched ciphersuites are optimised implementations of certain commonly used ciphersuites. Also the application must call SSL_shutdown() twice even if a protocol error has occurred (applications should not do this but some do anyway). Fixed in OpenSSL 1.0.2r (Affected 1.0.2-1.0.2q). ### What kind of flaw is it? - CWE-203: Observable Discrepancy ### How an attack on it works - Where an attacker can be: Anywhere on the internet - How hard it is to pull off: Hard: conditions must line up - Login needed first: No login needed - Does someone have to click: No, nobody has to do anything - What an attacker gets: Can read data Severity vector: `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N` ## Is CVE-2019-1559 being exploited? Not that we know of It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 17%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 17%, 17%, 17%, 17%, 17%, 17%, 17%. ### Timeline - 27 February 2019: Published - 7 November 2023: Record last updated - 16 June 2026: Exploit likelihood jumped ### How Precursor Intelligence ranks it CVE-2019-1559 scores **28 out of 100 (Low)**, with the action "Monitor". Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less: - Evidence it is being exploited: biggest factor - How severe it is: strong factor - How widely exposed it is: smaller factor - Threat activity around it: smaller factor 85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it. ## Who is affected by CVE-2019-1559? The published record lists 90 products. Versions are as published: "1.0.2 to before 1.0.2r" means from 1.0.2 up to, but not including, 1.0.2r. - [OpenSSL](https://www.precursorintelligence.com/product/openssl/openssl) by [OpenSSL](https://www.precursorintelligence.com/vendors/openssl) (Application): 1.0.2 to before 1.0.2r - [Communications Diameter Signaling Router](https://www.precursorintelligence.com/product/oracle/communications_diameter_signaling_router) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.0.0, 8.1, 8.2, 8.3, 8.4 - [Communications Session Border Controller](https://www.precursorintelligence.com/product/oracle/communications_session_border_controller) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 7.4, 8.0.0, 8.1.0, 8.2, 8.3 - [Communications Session Router](https://www.precursorintelligence.com/product/oracle/communications_session_router) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 7.4, 8.0, 8.1, 8.2, 8.3 - [Big-IP Access Policy Manager](https://www.precursorintelligence.com/product/f5/big-ip_access_policy_manager) by [F5](https://www.precursorintelligence.com/vendors/f5) (Application): 12.1.0 to 12.1.5, 13.0.0 to 13.1.3, 14.0.0 to 14.1.2, 15.0.0 to 15.1.0 - [Big-IP Advanced Firewall Manager](https://www.precursorintelligence.com/product/f5/big-ip_advanced_firewall_manager) by [F5](https://www.precursorintelligence.com/vendors/f5) (Application): 12.1.0 to 12.1.5, 13.0.0 to 13.1.3, 14.0.0 to 14.1.2, 15.0.0 to 15.1.0 - [Big-IP Analytics](https://www.precursorintelligence.com/product/f5/big-ip_analytics) by [F5](https://www.precursorintelligence.com/vendors/f5) (Application): 12.1.0 to 12.1.5, 13.0.0 to 13.1.3, 14.0.0 to 14.1.2, 15.0.0 to 15.1.0 - [Big-IP Application Acceleration Manager](https://www.precursorintelligence.com/product/f5/big-ip_application_acceleration_manager) by [F5](https://www.precursorintelligence.com/vendors/f5) (Application): 12.1.0 to 12.1.5, 13.0.0 to 13.1.3, 14.0.0 to 14.1.2, 15.0.0 to 15.1.0 - [Big-IP Application Security Manager](https://www.precursorintelligence.com/product/f5/big-ip_application_security_manager) by [F5](https://www.precursorintelligence.com/vendors/f5) (Application): 12.1.0 to 12.1.5, 13.0.0 to 13.1.3, 14.0.0 to 14.1.2, 15.0.0 to 15.1.0 - [Big-IP Domain Name System](https://www.precursorintelligence.com/product/f5/big-ip_domain_name_system) by [F5](https://www.precursorintelligence.com/vendors/f5) (Application): 12.1.0 to 12.1.5, 13.0.0 to 13.1.3, 14.0.0 to 14.1.2, 15.0.0 to 15.1.0 - [Big-IP Edge Gateway](https://www.precursorintelligence.com/product/f5/big-ip_edge_gateway) by [F5](https://www.precursorintelligence.com/vendors/f5) (Application): 12.1.0 to 12.1.5, 13.0.0 to 13.1.3, 14.0.0 to 14.1.2, 15.0.0 to 15.1.0 - [Big-IP Fraud Protection Service](https://www.precursorintelligence.com/product/f5/big-ip_fraud_protection_service) by [F5](https://www.precursorintelligence.com/vendors/f5) (Application): 12.1.0 to 12.1.5, 13.0.0 to 13.1.3, 14.0.0 to 14.1.2, 15.0.0 to 15.1.0 - [Big-IP Global Traffic Manager](https://www.precursorintelligence.com/product/f5/big-ip_global_traffic_manager) by [F5](https://www.precursorintelligence.com/vendors/f5) (Application): 12.1.0 to 12.1.5, 13.0.0 to 13.1.3, 14.0.0 to 14.1.2, 15.0.0 to 15.1.0 - [Big-IP Link Controller](https://www.precursorintelligence.com/product/f5/big-ip_link_controller) by [F5](https://www.precursorintelligence.com/vendors/f5) (Application): 12.1.0 to 12.1.5, 13.0.0 to 13.1.3, 14.0.0 to 14.1.2, 15.0.0 to 15.1.0 - [Big-IP Local Traffic Manager](https://www.precursorintelligence.com/product/f5/big-ip_local_traffic_manager) by [F5](https://www.precursorintelligence.com/vendors/f5) (Application): 12.1.0 to 12.1.5, 13.0.0 to 13.1.3, 14.0.0 to 14.1.2, 15.0.0 to 15.1.0 - [Big-IP Policy Enforcement Manager](https://www.precursorintelligence.com/product/f5/big-ip_policy_enforcement_manager) by [F5](https://www.precursorintelligence.com/vendors/f5) (Application): 12.1.0 to 12.1.5, 13.0.0 to 13.1.3, 14.0.0 to 14.1.2, 15.0.0 to 15.1.0 - [Big-IP Webaccelerator](https://www.precursorintelligence.com/product/f5/big-ip_webaccelerator) by [F5](https://www.precursorintelligence.com/vendors/f5) (Application): 12.1.0 to 12.1.5, 13.0.0 to 13.1.3, 14.0.0 to 14.1.2, 15.0.0 to 15.1.0 - [Node.js](https://www.precursorintelligence.com/product/nodejs/node.js) by [Nodejs](https://www.precursorintelligence.com/vendors/nodejs) (Application): 6.0.0 to 6.8.1, 6.9.0 to before 6.17.0, 8.0.0 to 8.8.1, 8.9.0 to before 8.15.1 - [PAN-OS](https://www.precursorintelligence.com/product/paloaltonetworks/pan-os) by [Palo Alto Networks](https://www.precursorintelligence.com/vendors/paloaltonetworks) (Operating system): 7.1.0 to before 7.1.15, 8.0.0 to before 8.0.20, 8.1.0 to before 8.1.8, 9.0.0 to before 9.0.2 - [Business Intelligence](https://www.precursorintelligence.com/product/oracle/business_intelligence) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 11.1.1.9.0, 12.2.1.3.0, 12.2.1.4.0 - [Enterprise Linux](https://www.precursorintelligence.com/product/redhat/enterprise_linux) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Operating system): 6.0, 7.0, 8.0 - [Enterprise Manager Base Platform](https://www.precursorintelligence.com/product/oracle/enterprise_manager_base_platform) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.1.0.5.0, 13.2.0.0.0, 13.3.0.0.0 - [Fedora](https://www.precursorintelligence.com/product/fedoraproject/fedora) by [Fedoraproject](https://www.precursorintelligence.com/vendors/fedoraproject) (Operating system): 29, 30, 31 - [Jd Edwards World Security](https://www.precursorintelligence.com/product/oracle/jd_edwards_world_security) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): a9.3, a9.3.1, a9.4 - [Leap](https://www.precursorintelligence.com/product/opensuse/leap) by [Opensuse](https://www.precursorintelligence.com/vendors/opensuse) (Operating system): 15.0, 15.1, 42.3 - [MySQL](https://www.precursorintelligence.com/product/oracle/mysql) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 5.6.0 to 5.6.43, 5.7.0 to 5.7.25, 8.0.0 to 8.0.15 - [Peoplesoft Enterprise Peopletools](https://www.precursorintelligence.com/product/oracle/peoplesoft_enterprise_peopletools) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.55, 8.56, 8.57 - [Ubuntu Linux](https://www.precursorintelligence.com/product/canonical/ubuntu_linux) by [Canonical](https://www.precursorintelligence.com/vendors/canonical) (Operating system): 16.04, 18.04, 18.10 - [Active Iq Unified Manager](https://www.precursorintelligence.com/product/netapp/active_iq_unified_manager) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): 7.3 and later, 9.5 and later - [Big-Iq Centralized Management](https://www.precursorintelligence.com/product/f5/big-iq_centralized_management) by [F5](https://www.precursorintelligence.com/vendors/f5) (Application): 6.0.0 to 6.1.0, 7.0.0 to 7.1.0 - [Communications Unified Session Manager](https://www.precursorintelligence.com/product/oracle/communications_unified_session_manager) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 7.3.5, 8.2.5 - [Debian Linux](https://www.precursorintelligence.com/product/debian/debian_linux) by [Debian](https://www.precursorintelligence.com/vendors/debian) (Operating system): 8.0, 9.0 - [Enterprise Linux Desktop](https://www.precursorintelligence.com/product/redhat/enterprise_linux_desktop) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Operating system): 6.0, 7.0 - [Enterprise Linux Server](https://www.precursorintelligence.com/product/redhat/enterprise_linux_server) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Operating system): 6.0, 7.0 - [Enterprise Linux Workstation](https://www.precursorintelligence.com/product/redhat/enterprise_linux_workstation) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Operating system): 6.0, 7.0 - [Enterprise Manager Ops Center](https://www.precursorintelligence.com/product/oracle/enterprise_manager_ops_center) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.3.3, 12.4.0 - [Mysql Enterprise Monitor](https://www.precursorintelligence.com/product/oracle/mysql_enterprise_monitor) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): up to 4.0.8, 8.0.0 to 8.0.14 - [Traffix Signaling Delivery Controller](https://www.precursorintelligence.com/product/f5/traffix_signaling_delivery_controller) by [F5](https://www.precursorintelligence.com/vendors/f5) (Application): 4.4.0, 5.0.0 to 5.1.0 - [A220](https://www.precursorintelligence.com/product/netapp/a220) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Hardware): version not specified - [A220 Firmware](https://www.precursorintelligence.com/product/netapp/a220_firmware) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Operating system): version not specified - [A320](https://www.precursorintelligence.com/product/netapp/a320) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Hardware): version not specified - [A320 Firmware](https://www.precursorintelligence.com/product/netapp/a320_firmware) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Operating system): version not specified - [A800](https://www.precursorintelligence.com/product/netapp/a800) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Hardware): version not specified - [A800 Firmware](https://www.precursorintelligence.com/product/netapp/a800_firmware) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Operating system): version not specified - [Agent](https://www.precursorintelligence.com/product/mcafee/agent) by [Mcafee](https://www.precursorintelligence.com/vendors/mcafee) (Application): 5.6.0 to 5.6.4 - [Altavault](https://www.precursorintelligence.com/product/netapp/altavault) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [API Gateway](https://www.precursorintelligence.com/product/oracle/api_gateway) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 11.1.2.4.0 - [C190](https://www.precursorintelligence.com/product/netapp/c190) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Hardware): version not specified - [C190 Firmware](https://www.precursorintelligence.com/product/netapp/c190_firmware) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Operating system): version not specified - [Cloud Backup](https://www.precursorintelligence.com/product/netapp/cloud_backup) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Clustered Data Ontap Antivirus Connector](https://www.precursorintelligence.com/product/netapp/clustered_data_ontap_antivirus_connector) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Cn1610](https://www.precursorintelligence.com/product/netapp/cn1610) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Hardware): version not specified - [Cn1610 Firmware](https://www.precursorintelligence.com/product/netapp/cn1610_firmware) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Operating system): version not specified - [Communications Performance Intelligence Center](https://www.precursorintelligence.com/product/oracle/communications_performance_intelligence_center) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 10.4.0.2 - [Data Exchange Layer](https://www.precursorintelligence.com/product/mcafee/data_exchange_layer) by [Mcafee](https://www.precursorintelligence.com/vendors/mcafee) (Application): 4.0.0 to before 6.0.0 - [Element Software](https://www.precursorintelligence.com/product/netapp/element_software) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Endeca Server](https://www.precursorintelligence.com/product/oracle/endeca_server) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 7.7.0 - [Fas2720](https://www.precursorintelligence.com/product/netapp/fas2720) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Hardware): version not specified - [Fas2720 Firmware](https://www.precursorintelligence.com/product/netapp/fas2720_firmware) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Operating system): version not specified - [Fas2750](https://www.precursorintelligence.com/product/netapp/fas2750) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Hardware): version not specified - [Fas2750 Firmware](https://www.precursorintelligence.com/product/netapp/fas2750_firmware) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Operating system): version not specified - [Hci Compute Node](https://www.precursorintelligence.com/product/netapp/hci_compute_node) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Hardware): version not specified - [Hci Management Node](https://www.precursorintelligence.com/product/netapp/hci_management_node) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Hyper Converged Infrastructure](https://www.precursorintelligence.com/product/netapp/hyper_converged_infrastructure) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Jboss Enterprise Web Server](https://www.precursorintelligence.com/product/redhat/jboss_enterprise_web_server) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): 5.0.0 - [Jd Edwards Enterpriseone Tools](https://www.precursorintelligence.com/product/oracle/jd_edwards_enterpriseone_tools) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 9.2 - [Mysql Workbench](https://www.precursorintelligence.com/product/oracle/mysql_workbench) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): up to 8.0.16 - [Nessus](https://www.precursorintelligence.com/product/tenable/nessus) by [Tenable](https://www.precursorintelligence.com/vendors/tenable) (Application): up to 8.2.3 - [Oncommand Insight](https://www.precursorintelligence.com/product/netapp/oncommand_insight) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Oncommand Unified Manager](https://www.precursorintelligence.com/product/netapp/oncommand_unified_manager) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Oncommand Unified Manager Core Package](https://www.precursorintelligence.com/product/netapp/oncommand_unified_manager_core_package) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Oncommand Workflow Automation](https://www.precursorintelligence.com/product/netapp/oncommand_workflow_automation) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Ontap Select Deploy](https://www.precursorintelligence.com/product/netapp/ontap_select_deploy) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Ontap Select Deploy Administration Utility](https://www.precursorintelligence.com/product/netapp/ontap_select_deploy_administration_utility) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Santricity Smi-S Provider](https://www.precursorintelligence.com/product/netapp/santricity_smi-s_provider) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Secure Global Desktop](https://www.precursorintelligence.com/product/oracle/secure_global_desktop) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 5.4 - [Service Processor](https://www.precursorintelligence.com/product/netapp/service_processor) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Services Tools Bundle](https://www.precursorintelligence.com/product/oracle/services_tools_bundle) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 19.2 - [Smi-S Provider](https://www.precursorintelligence.com/product/netapp/smi-s_provider) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Snapcenter](https://www.precursorintelligence.com/product/netapp/snapcenter) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Snapdrive](https://www.precursorintelligence.com/product/netapp/snapdrive) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Snapprotect](https://www.precursorintelligence.com/product/netapp/snapprotect) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Solidfire](https://www.precursorintelligence.com/product/netapp/solidfire) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Steelstore Cloud Integrated Storage](https://www.precursorintelligence.com/product/netapp/steelstore_cloud_integrated_storage) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Storage Automation Store](https://www.precursorintelligence.com/product/netapp/storage_automation_store) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Storagegrid](https://www.precursorintelligence.com/product/netapp/storagegrid) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): 9.0.0 to 9.0.4 - [Threat Intelligence Exchange Server](https://www.precursorintelligence.com/product/mcafee/threat_intelligence_exchange_server) by [Mcafee](https://www.precursorintelligence.com/vendors/mcafee) (Application): 2.0.0 to before 3.0.0 - [Virtualization](https://www.precursorintelligence.com/product/redhat/virtualization) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): 4.0 - [Virtualization Host](https://www.precursorintelligence.com/product/redhat/virtualization_host) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): 4.0 - [Web Gateway](https://www.precursorintelligence.com/product/mcafee/web_gateway) by [Mcafee](https://www.precursorintelligence.com/vendors/mcafee) (Application): 7.0.0 to before 9.0.0 ## How do I fix CVE-2019-1559? 1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list. 2. **Apply the vendor’s fix.** Install the update named in the vendor’s advisory. We’ve put the advisories and patch notes first in the list. 3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in. 4. **Keep an eye on it.** Track the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood. ### References - [security.netapp.com](https://security.netapp.com/advisory/ntap-20190301-0001/) (Patch, Third-party advisory) - [oracle.com](https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html) (Patch, Third-party advisory) - [oracle.com](https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html) (Patch, Third-party advisory) - [oracle.com](https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html) (Patch, Third-party advisory) - [tenable.com](https://www.tenable.com/security/tns-2019-02) (Patch, Third-party advisory) - [openssl.org](https://www.openssl.org/news/secadv/20190226.txt) (Vendor advisory) - [lists.opensuse.org](http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00041.html) (Mailing list, Third-party advisory) - [lists.opensuse.org](http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00019.html) (Mailing list, Third-party advisory) - [lists.opensuse.org](http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00046.html) (Mailing list, Third-party advisory) - [lists.opensuse.org](http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00047.html) (Mailing list, Third-party advisory) - [lists.opensuse.org](http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00049.html) (Mailing list, Third-party advisory) - [lists.opensuse.org](http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00080.html) (Mailing list, Third-party advisory) - [securityfocus.com](http://www.securityfocus.com/bid/107174) (Third-party advisory, Vulnerability database) - [access.redhat.com](https://access.redhat.com/errata/RHSA-2019:2304) (Third-party advisory) - [access.redhat.com](https://access.redhat.com/errata/RHSA-2019:2437) (Third-party advisory) - [access.redhat.com](https://access.redhat.com/errata/RHSA-2019:2439) (Third-party advisory) - [access.redhat.com](https://access.redhat.com/errata/RHSA-2019:2471) (Third-party advisory) - [access.redhat.com](https://access.redhat.com/errata/RHSA-2019:3929) (Third-party advisory) - [access.redhat.com](https://access.redhat.com/errata/RHSA-2019:3931) (Third-party advisory) - [git.openssl.org](https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=e9bbefbf0f24c57645e7ad6a5a71ae649d18ac8e) - [kc.mcafee.com](https://kc.mcafee.com/corporate/index?page=content&id=SB10282) (Third-party advisory) - [lists.debian.org](https://lists.debian.org/debian-lts-announce/2019/03/msg00003.html) (Mailing list, Third-party advisory) - [lists.fedoraproject.org](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EWC42UXL5GHTU5G77VKBF6JYUUNGSHOM/) - [lists.fedoraproject.org](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y3IVFGSERAZLNJCK35TEM2R4726XIH3Z/) - [lists.fedoraproject.org](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZBEV5QGDRFUZDMNECFXUSN5FMYOZDE4V/) - [security.gentoo.org](https://security.gentoo.org/glsa/201903-10) (Third-party advisory) - [security.netapp.com](https://security.netapp.com/advisory/ntap-20190301-0002/) (Broken link, Third-party advisory) - [security.netapp.com](https://security.netapp.com/advisory/ntap-20190423-0002/) (Third-party advisory) - [support.f5.com](https://support.f5.com/csp/article/K18549143) (Third-party advisory) - [support.f5.com](https://support.f5.com/csp/article/K18549143?utm_source=f5support&%3Butm_medium=RSS) - [usn.ubuntu.com](https://usn.ubuntu.com/3899-1/) (Third-party advisory) - [usn.ubuntu.com](https://usn.ubuntu.com/4376-2/) (Broken link) - [debian.org](https://www.debian.org/security/2019/dsa-4400) (Third-party advisory) - [oracle.com](https://www.oracle.com/security-alerts/cpujan2020.html) (Third-party advisory) - [oracle.com](https://www.oracle.com/security-alerts/cpujan2021.html) (Third-party advisory) - [tenable.com](https://www.tenable.com/security/tns-2019-03) (Third-party advisory) ## Questions ### What is CVE-2019-1559? CVE-2019-1559 is a medium-severity flaw in OpenSSL, published on 27 February 2019. It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can read data. ### How serious is CVE-2019-1559? It scores 5.9 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2019-1559 is 28 out of 100, which is Low. Its action is "Monitor". Not confirmed as exploited yet, but serious or likely enough that it should not wait for a quiet month. ### Is CVE-2019-1559 being exploited? It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 17%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2019-1559 affect? For OpenSSL: 1.0.2 to before 1.0.2r. The record lists 90 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2019-1559? Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet. ## Does CVE-2019-1559 affect you? Precursor Intelligence keeps checking for you: - **Tell us what you run.** Pick your software from a list, or let us work it out from your website. - **We match it to every flaw.** Over 400,000 published flaws, checked against your list. - **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it. - **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools. Start free (no card, nothing to install): https://www.precursorintelligence.com/register Book a demo: https://www.precursorintelligence.com/contact