Out-of-bounds Write Affecting rh-redis5-redis package, versions <0:5.0.5-3.el7


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

Exploit Maturity
Not Defined
EPSS
1.16% (85th percentile)

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  • Snyk IDSNYK-RHEL7-RHREDIS5REDIS-4822053
  • published8 Oct 2021
  • disclosed4 Oct 2021

Introduced: 4 Oct 2021

CVE-2021-32626  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade RHEL:7 rh-redis5-redis to version 0:5.0.5-3.el7 or higher.
This issue was patched in RHSA-2021:3947.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rh-redis5-redis package and not the rh-redis5-redis package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

Redis is an open source, in-memory database that persists on disk. In affected versions specially crafted Lua scripts executing in Redis can cause the heap-based Lua stack to be overflowed, due to incomplete checks for this condition. This can result with heap corruption and potentially remote code execution. This problem exists in all versions of Redis with Lua scripting support, starting from 2.6. The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14. For users unable to update an additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands.

CVSS Scores

version 3.1