NA

CVE-2021-32761

Published: 21/07/2021 Updated: 22/07/2021

Vulnerability Summary

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.

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Debian Bug report logs - #991375 redis: CVE-2021-32761 Package: redis; Maintainer for redis is Chris Lamb <lamby@debianorg>; Source for redis is src:redis (PTS, buildd, popcon) Reported by: "Chris Lamb" <lamby@debianorg> Date: Wed, 21 Jul 2021 21:33:00 UTC Severity: grave Tags: security, upstream Found in version ...
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 22 and prior to versions 5013, 6015, and 625 On 32-bit systems, Redis `*BIT*` command are vulnerable to integer overflow that can potentially be exploited to corrupt the heap ...
A security issue has been found in Redis before version 625 In 32-bit versions, the Redis BITFIELD command is vulnerable to an integer overflow that can potentially be exploited to corrupt the heap, leak arbitrary heap contents or trigger remote code execution The vulnerability involves constructing specially crafted bit commands which overflow ...