# What is CVE-2019-16942?

> CVE-2019-16942 is a critical-severity flaw (CVSS 9.8) in Jackson-Databind from Fasterxml, published on 1 October 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 5.7%. If you run an affected version, plan in the vendor’s fix.

Canonical page: https://www.precursorintelligence.com/what-is/cve-2019-16942

## 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:** 56 out of 100 (Medium); action: Plan remediation. Kept up to date as the evidence changes.
- **Severity:** Critical (CVSS 9.8 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:** 5.7% (latest exploit-likelihood forecast)
- **Published:** 1 October 2019
- **Record last updated:** 7 November 2023
- **Main product:** Jackson-Databind from Fasterxml
- **Affected products:** 29

## What is CVE-2019-16942? 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, change data and take it offline.

### The official description

A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.0.0 through 2.9.10. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint and the service has the commons-dbcp (1.4) jar in the classpath, and an attacker can find an RMI service endpoint to access, it is possible to make the service execute a malicious payload. This issue exists because of org.apache.commons.dbcp.datasources.SharedPoolDataSource and org.apache.commons.dbcp.datasources.PerUserPoolDataSource mishandling.

### What kind of flaw is it?

- CWE-502: Deserialization of Untrusted Data

### 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 read data, change data and take it offline

Severity vector: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Is CVE-2019-16942 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 5.7%. That can change at any time, which is why we keep watching.

Exploit likelihood over the last 7 days: 5.7%, 5.7%, 5.7%, 5.7%, 5.7%, 5.7%, 5.7%.

### Timeline

- 1 October 2019: Published
- 7 November 2023: Record last updated

### How Precursor Intelligence ranks it

CVE-2019-16942 scores **56 out of 100 (Medium)**, with the action "Plan remediation".

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-2019-16942?

The published record lists 29 products. Versions are as published: "2.0.0 to before 2.6.7.3" means from 2.0.0 up to, but not including, 2.6.7.3.

- [Jackson-Databind](https://www.precursorintelligence.com/product/fasterxml/jackson-databind) by [Fasterxml](https://www.precursorintelligence.com/vendors/fasterxml) (Application): 2.0.0 to before 2.6.7.3, 2.8.0 to before 2.8.11.5, 2.9.0 to before 2.9.10.1
- [Banking Platform](https://www.precursorintelligence.com/product/oracle/banking_platform) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 2.4.0, 2.4.1, 2.5.0, 2.6.0, 2.6.1, 2.6.2, 2.7.0, 2.7.1, 2.9.0
- [Primavera Unifier](https://www.precursorintelligence.com/product/oracle/primavera_unifier) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 16.1, 16.2, 17.7 to 17.12, 18.8, 19.12
- [Database Server](https://www.precursorintelligence.com/product/oracle/database_server) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.2.0.1, 18c, 19c
- [Debian Linux](https://www.precursorintelligence.com/product/debian/debian_linux) by [Debian](https://www.precursorintelligence.com/vendors/debian) (Operating system): 8.0, 9.0, 10.0
- [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
- [Global Lifecycle Management Nextgen Oui Framework](https://www.precursorintelligence.com/product/oracle/global_lifecycle_management_nextgen_oui_framework) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.2.1.3.0, 12.2.1.4.0, 13.9.4.2.2
- [Primavera Gateway](https://www.precursorintelligence.com/product/oracle/primavera_gateway) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 17.12.0 to 17.12.6, 18.8.0 to 18.8.8, 19.12.0
- [Retail Merchandising System](https://www.precursorintelligence.com/product/oracle/retail_merchandising_system) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 15.0.3, 16.0.2, 16.0.3
- [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
- [Communications Billing and Revenue Management](https://www.precursorintelligence.com/product/oracle/communications_billing_and_revenue_management) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 7.5.0.23.0, 12.0.0.3.0
- [Communications Calendar Server](https://www.precursorintelligence.com/product/oracle/communications_calendar_server) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.0.0.2.0, 8.0.0.3.0
- [Fedora](https://www.precursorintelligence.com/product/fedoraproject/fedora) by [Fedoraproject](https://www.precursorintelligence.com/vendors/fedoraproject) (Operating system): 30, 31
- [Jboss Enterprise Application Platform](https://www.precursorintelligence.com/product/redhat/jboss_enterprise_application_platform) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Application): 7.2.0, 7.3
- [Siebel UI Framework](https://www.precursorintelligence.com/product/oracle/siebel_ui_framework) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): up to 20.5, 20.6
- [Webcenter Portal](https://www.precursorintelligence.com/product/oracle/webcenter_portal) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.2.1.3.0, 12.2.1.4.0
- [Webcenter Sites](https://www.precursorintelligence.com/product/oracle/webcenter_sites) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.2.1.3.0, 12.2.1.4.0
- [Weblogic Server](https://www.precursorintelligence.com/product/oracle/weblogic_server) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.2.1.3.0, 12.2.1.4.0
- [Communications Cloud Native Core Network Slice Selection Function](https://www.precursorintelligence.com/product/oracle/communications_cloud_native_core_network_slice_selection_function) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 1.2.1
- [Communications Evolved Communications Application Server](https://www.precursorintelligence.com/product/oracle/communications_evolved_communications_application_server) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 7.1
- [Goldengate Application Adapters](https://www.precursorintelligence.com/product/oracle/goldengate_application_adapters) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 19.1.0.0.0
- [Jd Edwards Enterpriseone Orchestrator](https://www.precursorintelligence.com/product/oracle/jd_edwards_enterpriseone_orchestrator) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 9.2
- [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
- [Oncommand API Services](https://www.precursorintelligence.com/product/netapp/oncommand_api_services) 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
- [Retail Sales Audit](https://www.precursorintelligence.com/product/oracle/retail_sales_audit) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 14.1
- [Service Level Manager](https://www.precursorintelligence.com/product/netapp/service_level_manager) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): version not specified
- Siebel Engineering - Installer & Deployment by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): up to 2.20.5
- [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

## How do I fix CVE-2019-16942?

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

- [github.com](https://github.com/FasterXML/jackson-databind/issues/2478) (Patch, Third-party advisory)
- [oracle.com](https://www.oracle.com//security-alerts/cpujul2021.html) (Patch, Third-party advisory)
- [oracle.com](https://www.oracle.com/security-alerts/cpuApr2021.html) (Patch, Third-party advisory)
- [oracle.com](https://www.oracle.com/security-alerts/cpuoct2020.html) (Patch, Third-party advisory)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2019:3901) (Third-party advisory)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2020:0159) (Third-party advisory)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2020:0160) (Third-party advisory)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2020:0161) (Third-party advisory)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2020:0164) (Third-party advisory)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2020:0445) (Third-party advisory)
- [issues.apache.org](https://issues.apache.org/jira/browse/GEODE-7255) (Issue tracking, Third-party advisory)
- [lists.apache.org](https://lists.apache.org/thread.html/519eb0fd45642dcecd9ff74cb3e71c20a4753f7d82e2f07864b5108f%40%3Cdev.drill.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/7782a937c9259a58337ee36b2961f00e2d744feafc13084e176d0df5%40%3Cissues.geode.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/a430dbc9be874c41314cc69e697384567a9a24025e819d9485547954%40%3Cissues.geode.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/b0656d359c7d40ec9f39c8cc61bca66802ef9a2a12ee199f5b0c1442%40%3Cdev.drill.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/b2e23c94f9dfef53e04c492e5d02e5c75201734be7adc73a49ef2370%40%3Cissues.geode.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/f9bc3e55f4e28d1dcd1a69aae6d53e609a758e34d2869b4d798e13cc%40%3Cissues.drill.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/rf1bbc0ea4a9f014cf94df9a12a6477d24a27f52741dbc87f2fd52ff2%40%3Cissues.geode.apache.org%3E)
- [lists.debian.org](https://lists.debian.org/debian-lts-announce/2019/10/msg00001.html) (Mailing list, Third-party advisory)
- [lists.fedoraproject.org](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q7CANA7KV53JROZDX5Z5P26UG5VN2K43/)
- [lists.fedoraproject.org](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TH5VFUN4P7CCIP7KSEXYA5MUTFCUDUJT/)
- [medium.com](https://medium.com/%40cowtowncoder/on-jackson-cves-dont-panic-here-is-what-you-need-to-know-54cd0d6e8062)
- [seclists.org](https://seclists.org/bugtraq/2019/Oct/6) (Issue tracking, Mailing list, Third-party advisory)
- [security.netapp.com](https://security.netapp.com/advisory/ntap-20191017-0006/) (Third-party advisory)
- [debian.org](https://www.debian.org/security/2019/dsa-4542) (Mailing list, Third-party advisory)
- [oracle.com](https://www.oracle.com/security-alerts/cpuapr2020.html) (Third-party advisory)
- [oracle.com](https://www.oracle.com/security-alerts/cpujan2020.html) (Third-party advisory)
- [oracle.com](https://www.oracle.com/security-alerts/cpujul2020.html) (Third-party advisory)

## Questions

### What is CVE-2019-16942?

CVE-2019-16942 is a critical-severity flaw in Jackson-Databind from Fasterxml, published on 1 October 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, change data and take it offline.

### How serious is CVE-2019-16942?

It scores 9.8 out of 10 on the CVSS severity scale, which is critical. Our risk score for CVE-2019-16942 is 56 out of 100, which is Medium. Its action is "Plan remediation". Not confirmed as exploited yet, but serious or likely enough that it should not wait for a quiet month.

### Is CVE-2019-16942 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 5.7%. That can change at any time, which is why we keep watching.

### Which versions does CVE-2019-16942 affect?

For Jackson-Databind from Fasterxml: 2.0.0 to before 2.6.7.3, 2.8.0 to before 2.8.11.5, 2.9.0 to before 2.9.10.1. The record lists 29 products in all, each with its versions, under "Who is affected" on this page.

### How do I fix CVE-2019-16942?

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-2019-16942 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.

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