# What is CVE-2020-2830? > CVE-2020-2830 is a medium-severity flaw (CVSS 5.3) in JDK from Oracle, published on 15 April 2020. 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 4.9%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.precursorintelligence.com/what-is/cve-2020-2830 ## At a glance - **Verdict:** Plan it in. No sign of exploitation and a low forecast. Patch it in your normal update cycle. - **Precursor Intelligence risk score:** 31 out of 100 (Low); action: Monitor. Kept up to date as the evidence changes. - **Severity:** Medium (CVSS 5.3 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:** 4.9% (latest exploit-likelihood forecast) - **Published:** 15 April 2020 - **Record last updated:** 7 November 2023 - **Main product:** JDK from Oracle - **Affected products:** 21 ## What is CVE-2020-2830? 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 slow it down. ### The official description Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Concurrency). Supported versions that are affected are Java SE: 7u251, 8u241, 11.0.6 and 14; Java SE Embedded: 8u241. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, Java SE Embedded. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE, Java SE Embedded. Note: Applies to client and server deployment of Java. This vulnerability can be exploited through sandboxed Java Web Start applications and sandboxed Java applets. It can also be exploited by supplying data to APIs in the specified Component without using sandboxed Java Web Start applications or sandboxed Java applets, such as through a web service. ### What kind of flaw is it? - Unknown: Unknown ### How an attack on it works - Where an attacker can be: Anywhere on the internet - How hard it is to pull off: Easy: no special conditions - Login needed first: No login needed - Does someone have to click: No, nobody has to do anything - What an attacker gets: Can slow it down Severity vector: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L` ## Is CVE-2020-2830 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 4.9%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 4.9%, 4.9%, 4.9%, 4.9%, 4.9%, 4.9%, 4.9%. ### Timeline - 15 April 2020: Published - 7 November 2023: Record last updated ### How Precursor Intelligence ranks it CVE-2020-2830 scores **31 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-2020-2830? The published record lists 21 products. Versions are as published: "2.0.0 to before 2.3.1" means from 2.0.0 up to, but not including, 2.3.1. - [JDK](https://www.precursorintelligence.com/product/oracle/jdk) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 1.7.0-update251, 1.8.0-update241, 11.0.6, 14.0.0 - [Openjdk](https://www.precursorintelligence.com/product/oracle/openjdk) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 7, 7-update1, 7-update2, 7-update3, 7-update4, 7-update5, 7-update6, 7-update7, 7-update9, 7-update10, 7-update11, 7-update13, 7-update15, 7-update17, 7-update21, 7-update25, 7-update40, 7-update45, 7-update51, 7-update55, 7-update60, 7-update65, 7-update67, 7-update72, 7-update76, 7-update80, 7-update85, 7-update91, 7-update95, 7-update97, 7-update99, 7-update101, 7-update111, 7-update121, 7-update131, 7-update141, 7-update151, 7-update161, 7-update171, 7-update181 and 52 more - [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 2.3.1, 2.3.1, 2.3.1-hotfix1, 2.3.1-hotfix2, 3.0.0 - [JRE](https://www.precursorintelligence.com/product/oracle/jre) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 1.7.0-update_251, 1.8.0-update_241, 11.0.6, 14.0.0 - [Fedora](https://www.precursorintelligence.com/product/fedoraproject/fedora) by [Fedoraproject](https://www.precursorintelligence.com/vendors/fedoraproject) (Operating system): 30, 31, 32 - [Ubuntu Linux](https://www.precursorintelligence.com/product/canonical/ubuntu_linux) by [Canonical](https://www.precursorintelligence.com/vendors/canonical) (Operating system): 16.04, 18.04, 19.10 - [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 - [Debian Linux](https://www.precursorintelligence.com/product/debian/debian_linux) by [Debian](https://www.precursorintelligence.com/vendors/debian) (Operating system): 8.0, 10.0 - [Leap](https://www.precursorintelligence.com/product/opensuse/leap) by [Opensuse](https://www.precursorintelligence.com/vendors/opensuse) (Operating system): 15.1, 15.2 - [7-Mode Transition Tool](https://www.precursorintelligence.com/product/netapp/7-mode_transition_tool) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): 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 - [E-Series Performance Analyzer](https://www.precursorintelligence.com/product/netapp/e-series_performance_analyzer) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [E-Series Santricity OS Controller](https://www.precursorintelligence.com/product/netapp/e-series_santricity_os_controller) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): 11.0.0 to 11.60.1 - [E-Series Santricity Web Services](https://www.precursorintelligence.com/product/netapp/e-series_santricity_web_services) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Oncommand Insight](https://www.precursorintelligence.com/product/netapp/oncommand_insight) 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 - [Plug-in for Symantec Netbackup](https://www.precursorintelligence.com/product/netapp/plug-in_for_symantec_netbackup) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Santricity Unified Manager](https://www.precursorintelligence.com/product/netapp/santricity_unified_manager) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified - [Snapmanager](https://www.precursorintelligence.com/product/netapp/snapmanager) 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 - [Storagegrid](https://www.precursorintelligence.com/product/netapp/storagegrid) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): 9.0.0 to 9.0.4 ## How do I fix CVE-2020-2830? 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 - [kc.mcafee.com](https://kc.mcafee.com/corporate/index?page=content&id=SB10318) (Patch, Third-party advisory) - [oracle.com](https://www.oracle.com/security-alerts/cpuapr2020.html) (Vendor advisory) - [lists.opensuse.org](http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00000.html) (Third-party advisory) - [lists.opensuse.org](http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00023.html) (Third-party advisory) - [lists.opensuse.org](http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00048.html) (Third-party advisory) - [lists.debian.org](https://lists.debian.org/debian-lts-announce/2020/04/msg00024.html) (Third-party advisory) - [lists.fedoraproject.org](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CKAV6KFFAEANXAN73AFTGU7Z6YNRWCXQ/) - [lists.fedoraproject.org](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7VHC4EW36KZEIDQ56RPCWBZCQELFFKN/) - [lists.fedoraproject.org](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYHHHZRHXCBGRHGE5UP7UEB4IZ2QX536/) - [security.gentoo.org](https://security.gentoo.org/glsa/202006-22) (Third-party advisory) - [security.netapp.com](https://security.netapp.com/advisory/ntap-20200416-0004/) (Third-party advisory) - [usn.ubuntu.com](https://usn.ubuntu.com/4337-1/) (Third-party advisory) - [debian.org](https://www.debian.org/security/2020/dsa-4662) (Third-party advisory) ## Questions ### What is CVE-2020-2830? CVE-2020-2830 is a medium-severity flaw in JDK from Oracle, published on 15 April 2020. It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can slow it down. ### How serious is CVE-2020-2830? It scores 5.3 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2020-2830 is 31 out of 100, which is Low. Its action is "Monitor". No sign of exploitation and a low forecast. Patch it in your normal update cycle. ### Is CVE-2020-2830 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 4.9%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2020-2830 affect? For JDK from Oracle: 1.7.0-update251, 1.8.0-update241, 11.0.6, 14.0.0. The record lists 21 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2020-2830? 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-2020-2830 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