CVE-2019-16943

NameCVE-2019-16943
DescriptionA 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 p6spy (3.8.6) 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 com.p6spy.engine.spy.P6DataSource mishandling.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-1943-1, DSA-4542-1
NVD severityhigh (attack range: remote)
Debian Bugs941530

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
jackson-databind (PTS)jessie2.4.2-2+deb8u4vulnerable
jessie (security)2.4.2-2+deb8u9fixed
stretch2.8.6-1+deb9u5vulnerable
stretch (security)2.8.6-1+deb9u6fixed
buster2.9.8-3vulnerable
buster (security)2.9.8-3+deb10u1fixed
bullseye, sid2.10.0-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
jackson-databindsource(unstable)2.10.0-2high941530
jackson-databindsourcebuster2.9.8-3+deb10u1highDSA-4542-1
jackson-databindsourcejessie2.4.2-2+deb8u9highDLA-1943-1
jackson-databindsourcestretch2.8.6-1+deb9u6highDSA-4542-1

Notes

https://github.com/FasterXML/jackson-databind/issues/2478

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