CVE-2021-41099

Name	CVE-2021-41099
Description	Redis is an open source, in-memory database that persists on disk. An integer overflow bug in the underlying string library can be used to corrupt the heap and potentially result with denial of service or remote code execution. The vulnerability involves changing the default proto-max-bulk-len configuration parameter to a very large value and constructing specially crafted network payloads or commands. 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 proto-max-bulk-len configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-2810-1, DSA-5001-1

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	Origin
redis	source	stretch	3:3.2.6-3+deb9u8	DLA-2810-1
redis	source	buster	5:5.0.14-1+deb10u1	DSA-5001-1
redis	source	bullseye	5:6.0.16-1+deb11u1	DSA-5001-1
redis	source	(unstable)	5:6.0.16-1

https://github.com/redis/redis/security/advisories/GHSA-j3cr-9h5g-6cph