PT-2023-12146 · Redis+2 · Redis+2

Zer0E · Published 2023-07-15 · Updated 2024-08-22 · CVE-2021-31294

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Redis versions prior to 6.2 Redis versions prior to 6cbea7d

Description The issue allows a replica to cause an assertion failure in a primary server by sending a non-administrative command, specifically a SET command. This was fixed for Redis 6.2.x and 7.x in 2021. Versions before 6.2 were not intended to have safety guarantees related to this.

Recommendations For Redis versions prior to 6.2, update to version 6.2 or later to resolve the issue. For Redis versions prior to 6cbea7d, update to a version that includes the fix for this issue. As a temporary workaround, consider restricting the use of the SET command from replicas to minimize the risk of exploitation.

Exploit

Fix

Assertion Failure

Weakness Enumeration

CWE-617

Related Identifiers

BIT-KEYDB-2021-31294

BIT-REDIS-2021-31294

BIT-VALKEY-2021-31294

CVE-2021-31294

PYSEC-2023-312

Affected Products

Astra Linux

Debian

Redis

References · 18

• 🔥 https://github.com/redis/redis/issues/8712 · Exploit
• https://github.com/redis/redis/commit/6cbea7d29b5285692843bc1c351abba1a7ef326f · Patch
• https://github.com/redis/redis/commit/46f4ebbe842620f0976a36741a72482620aa4b48 · Patch
• https://osv.dev/vulnerability/BIT-keydb-2021-31294 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-31294 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-31294 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2023-312 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-31294 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-valkey-2021-31294 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-31294 · Security Note
• https://osv.dev/vulnerability/BIT-redis-2021-31294 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-31294 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-31294 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-31294 · Vendor Advisory
• https://t.me/cibsecurity/66793 · Telegram Post