CVE-2023-28856

Redis is an open source, in-memory database that persists on disk. Authenticated users can use the HINCRBYFLOAT command to create an invalid hash field that will crash Redis on access in affected versions. This issue has been addressed in in versions 7.0.11, 6.2.12, and 6.0.19. Users are advised to upgrade. There are no known workarounds for this issue.

Weakness

The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.

Affected Software

Extended Description

While assertion is good for catching logic errors and reducing the chances of reaching more serious vulnerability conditions, it can still lead to a denial of service. For example, if a server handles multiple simultaneous connections, and an assert() occurs in one single connection that causes all other connections to be dropped, this is a reachable assertion that leads to a denial of service.

Potential Mitigations

References

• https://github.com/redis/redis/commit/bc7fe41e5857a0854d524e2a63a028e9394d2a5c
• https://github.com/redis/redis/pull/11149
• https://github.com/redis/redis/security/advisories/GHSA-hjv8-vjf6-wcr6
• https://lists.debian.org/debian-lts-announce/2023/04/msg00023.html
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EQ4DJSO4DMR55AWK6OPVJH5UTEB35R2Z/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LPUTH7NBQTZDVJWFNUD24ZCS6NDUFYS6/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OQGKMKSQE67L32HE6W5EI2I2YKW5VWHI/
• https://security.netapp.com/advisory/ntap-20230601-0007/