Amazon Linux 2 Security Advisory: ALASREDIS6-2023-005
Advisory Release Date: 2023-08-21 21:00 Pacific
Advisory Updated Date: 2023-09-25 22:02 Pacific
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. (CVE-2021-32761)
Affected Packages:
redis
Note:
This advisory is applicable to Amazon Linux 2 - Redis6 Extra. Visit this page to learn more about Amazon Linux 2 (AL2) Extras and this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update redis to update your system.
aarch64:
redis-6.2.5-1.amzn2.aarch64
redis-devel-6.2.5-1.amzn2.aarch64
redis-debuginfo-6.2.5-1.amzn2.aarch64
noarch:
redis-doc-6.2.5-1.amzn2.noarch
src:
redis-6.2.5-1.amzn2.src
x86_64:
redis-6.2.5-1.amzn2.x86_64
redis-devel-6.2.5-1.amzn2.x86_64
redis-debuginfo-6.2.5-1.amzn2.x86_64