CVE-2021-29477

Name	CVE-2021-29477
Description	Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and message broker. An integer overflow bug in Redis version 6.0 or newer could be exploited using the `STRALGO LCS` command to corrupt the heap and potentially result with remote code execution. The problem is fixed in version 6.2.3 and 6.0.13. An additional workaround to mitigate the problem without patching the redis-server executable is to use ACL configuration to prevent clients from using the `STRALGO LCS` command.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	988045

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
redis (PTS)	buster	5:5.0.14-1+deb10u2	fixed
	buster (security)	5:5.0.14-1+deb10u5	fixed
	bullseye (security), bullseye	5:6.0.16-1+deb11u2	fixed
	bookworm, bookworm (security)	5:7.0.15-1~deb12u1	fixed
	sid, trixie	5:7.0.15-1	fixed

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

Package	Type	Release	Fixed Version	Debian Bugs
redis	source	stretch	(not affected)
redis	source	buster	(not affected)
redis	source	(unstable)	5:6.0.13-1	988045

Notes

[buster] - redis <not-affected> (Vulnerable code not present)
[stretch] - redis <not-affected> (Vulnerable code not present)
https://groups.google.com/g/redis-db/c/6GSWzTW0PR8/m/8FbdIEEoBAAJ
https://github.com/redis/redis/commit/f0c5f920d0f88bd8aa376a2c05af4902789d1ef9
https://github.com/redis/redis/security/advisories/GHSA-vqxj-26vj-996g