CVE-2019-14439 Deserialization of untrusted data in FasterXML jackson-databind
Attackers can execute arbitrary code via deserialization in jackson-databind when Default Typing is enabled and logback is present.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-14439?
CVE-2019-14439 is a high-severity unsafe deserialization vulnerability in Debian Debian Linux, published on 30 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x before 2.9.9.2. This occurs when Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint and the service has the logback jar in the classpath.
Weakness: CWE-502
Which versions are affected by CVE-2019-14439?
8 open source packages ship an affected version, including com.fasterxml.jackson.core:jackson-databind. It affects 18 products.
| Package | Affected | Fixed in |
|---|---|---|
com.fasterxml.jackson.core:jackson-databind Maven | All versions | 2.6.7.3 |
com.fasterxml.jackson.core:jackson-databind Maven | All versions | 2.6.7.3 |
com.fasterxml.jackson.core:jackson-databind Maven | From 2.7.0 | 2.7.9.6 |
com.fasterxml.jackson.core:jackson-databind Maven | From 2.7.0 | 2.7.9.6 |
com.fasterxml.jackson.core:jackson-databind Maven | From 2.8.0 | 2.8.11.4 |
com.fasterxml.jackson.core:jackson-databind Maven | From 2.8.0 | 2.8.11.4 |
2 more packages
com.fasterxml.jackson.core:jackson-databind Maven | From 2.9.0 | 2.9.9.2 |
com.fasterxml.jackson.core:jackson-databind Maven | From 2.9.0 | 2.9.9.2 |
Products include Apache Drill, Debian Debian Linux, Fasterxml Jackson-Databind, Fedoraproject Fedora, Oracle Banking Platform, Oracle Communications Diameter Signaling Router and 12 more.
How do I fix CVE-2019-14439?
Upgrade com.fasterxml.jackson.core:jackson-databind to a fixed version for your release line: 2.6.7.3, 2.7.9.6, 2.8.11.4 or 2.9.9.2.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2019-14439 being exploited?
There is no known exploitation of CVE-2019-14439 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as CLEANSTART-2026-PS95562, CVE-2019-14361, DEBIAN-CVE-2019-14439, GHSA-gwp4-hfv6-p7hw, ROOT-APP-MAVEN-CVE-2019-14439, UBUNTU-CVE-2019-14439.