CVE-2021-32687

NameCVE-2021-32687
DescriptionRedis is an open source, in-memory database that persists on disk. An integer overflow bug affecting all versions of Redis can be exploited to corrupt the heap and potentially be used to leak arbitrary contents of the heap or trigger remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration parameter to a very large value and constructing specially crafted commands to manipulate sets. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the set-max-intset-entries configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.
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)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
redis (PTS)stretch3:3.2.6-3+deb9u3vulnerable
stretch (security)3:3.2.6-3+deb9u7vulnerable
buster5:5.0.3-4+deb10u3vulnerable
buster (security)5:5.0.3-4+deb10u2vulnerable
bullseye5:6.0.15-1vulnerable
bookworm, sid5:6.0.16-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
redissource(unstable)5:6.0.16-1

Notes

https://github.com/redis/redis/security/advisories/GHSA-m3mf-8x9w-r27q

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