CVE-2021-32761

Name
CVE-2021-32761
Description
Redis is an in-memory database that persists on disk. A vulnerability involving out-of-bounds read and integer overflow to buffer overflow exists starting with version 2.2 and prior to versions 5.0.13, 6.0.15, and 6.2.5. On 32-bit systems, Redis `*BIT*` command are vulnerable to integer overflow that can potentially be exploited to corrupt the heap, leak arbitrary heap contents or trigger remote code execution. The vulnerability involves changing the default `proto-max-bulk-len` configuration parameter to a very large value and constructing specially crafted commands bit commands. This problem only affects Redis on 32-bit platforms, or compiled as a 32-bit binary. Redis versions 5.0.`3m 6.0.15, and 6.2.5 contain patches for this issue. 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.
NVD Severity
unknown
Other trackers
Mailing lists
Exploits
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
CONFIRM https://github.com/redis/redis/security/advisories/GHSA-8wxq-j7rp-g8wj
MLIST https://lists.debian.org/debian-lts-announce/2021/07/msg00017.html

Match rules

CPE URI Source package Min version Max version

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
redis edge-main 6.2.5-r0 TBK <alpine@jjtc.eu> fixed
redis 3.14-main 6.2.5-r0 TBK <alpine@jjtc.eu> fixed
redis 3.12-main 5.0.13-r0 TBK <alpine@jjtc.eu> fixed
redis 3.11-main 5.0.13-r0 TBK <alpine@jjtc.eu> fixed