CVE-2021-37137

NameCVE-2021-37137
DescriptionThe Snappy frame decoder function doesn't restrict the chunk length which may lead to excessive memory usage. Beside this it also may buffer reserved skippable chunks until the whole chunk was received which may lead to excessive memory usage as well. This vulnerability can be triggered by supplying malicious input that decompresses to a very big size (via a network stream or a file) or by sending a huge skippable chunk.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3268-1, DSA-5316-1
Debian Bugs1014769

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
netty (PTS)bullseye (security), bullseye1:4.1.48-4+deb11u2fixed
bookworm, bookworm (security)1:4.1.48-7+deb12u1fixed
sid, trixie1:4.1.48-10fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
nettysourcebuster1:4.1.33-1+deb10u3DLA-3268-1
nettysourcebullseye1:4.1.48-4+deb11u1DSA-5316-1
nettysource(unstable)1:4.1.48-61014769

Notes

[stretch] - netty <no-dsa> (Minor issue)
https://github.com/netty/netty/security/advisories/GHSA-9vjp-v76f-g363
Fixed by: https://github.com/netty/netty/commit/6da4956b31023ae967451e1d94ff51a746a9194f (netty-4.1.68.Final)

Search for package or bug name: Reporting problems