CVE-2021-20190

NameCVE-2021-20190
DescriptionA flaw was found in jackson-databind before 2.9.10.7. FasterXML mishandles the interaction between serialization gadgets and typing. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
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-2638-1
NVD severityhigh

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
jackson-databind (PTS)stretch2.8.6-1+deb9u7vulnerable
stretch (security)2.8.6-1+deb9u9fixed
buster2.9.8-3+deb10u3fixed
buster (security)2.9.8-3+deb10u1vulnerable
bullseye2.12.1-1fixed
bookworm, sid2.13.0-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
jackson-databindsourcestretch2.8.6-1+deb9u9DLA-2638-1
jackson-databindsourcebuster2.9.8-3+deb10u3
jackson-databindsource(unstable)2.12.1-1

Notes

https://github.com/FasterXML/jackson-databind/issues/2854
Starting from 2.10 series mitigated as Safe Default Typing is enabled by default
but still an issue when Default Typing is enabled.
https://github.com/FasterXML/jackson-databind/commit/7dbf51bf78d157098074a20bd9da39bd48c18e4a

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