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, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
netty (PTS)buster, buster (security)1:4.1.33-1+deb10u2vulnerable
bullseye1:4.1.48-4vulnerable
bookworm, sid1:4.1.48-5vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
nettysource(unstable)(unfixed)

Notes

[bullseye] - netty <no-dsa> (Minor issue)
[buster] - netty <no-dsa> (Minor issue)
[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)

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