Vulnerability · Published Apr 27, 2022 · Assigned by GitHub_M

CVE-2022-24736A Malformed Lua script can crash Redis

Low 3.3

In plain English

A low-severity null pointer dereference in redis from redis. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 74% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.3Low

Exploit odds (30 days)1.5%top 25.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Redis is an in-memory database that persists on disk. Prior to versions 6.2.7 and 7.0.0, an attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result with a crash of the redis-server process. The problem is fixed in Redis versions 7.0.0 and 6.2.7. An additional workaround to mitigate this problem without patching the redis-server executable, if Lua scripting is not being used, is to block access to `SCRIPT LOAD` and `EVAL` commands using ACL rules.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
AlmaLinux:8	redis	6.2.7-1.module_el8.7.0+3288+a82c1b48	ALSA-2022:7541
AlmaLinux:9	redis	6.2.7-1.el9	ALSA-2022:8096
AlmaLinux:8	redis-devel	6.2.7-1.module_el8.7.0+3288+a82c1b48	ALSA-2022:7541
AlmaLinux:9	redis-devel	6.2.7-1.el9	ALSA-2022:8096
AlmaLinux:8	redis-doc	6.2.7-1.module_el8.7.0+3288+a82c1b48	ALSA-2022:7541
AlmaLinux:9	redis-doc	6.2.7-1.el9	ALSA-2022:8096
Alpine:v3.20	redis	6.2.7-r0	ALPINE-CVE-2022-24736
Alpine:v3.21	redis	6.2.7-r0	ALPINE-CVE-2022-24736
Alpine:v3.22	redis	6.2.7-r0	ALPINE-CVE-2022-24736
Alpine:v3.23	redis	6.2.7-r0	ALPINE-CVE-2022-24736
Alpine:v3.24	redis	6.2.7-r0	ALPINE-CVE-2022-24736
Debian:12	redis	5:7.0.1-4	DEBIAN-CVE-2022-24736
Debian:13	redis	5:7.0.1-4	DEBIAN-CVE-2022-24736
Debian:14	redis	5:7.0.1-4	DEBIAN-CVE-2022-24736
Rocky Linux:8	redis	0:6.2.7-1.module+el8.7.0+1105+8815ce78	RLSA-2022:7541
Rocky Linux:9	redis	0:6.2.7-1.el9	RLSA-2022:8096

Affected products (as reported)

Vendor	Product	Versions
redis	redis	< 6.2.7< 7.0.0

Weakness: CWE-476 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References

https://github.com/redis/redis/pull/10651 x_refsource_MISC
https://github.com/redis/redis/releases/tag/6.2.7 x_refsource_MISC
https://github.com/redis/redis/releases/tag/7.0.0 x_refsource_MISC
https://github.com/redis/redis/security/advisories/GHSA-3qpw-7686-5984 x_refsource_CONFIRM
FEDORA-2022-6ed1ce2838 vendor-advisory, x_refsource_FEDORA
FEDORA-2022-a0a4c7eb31 vendor-advisory, x_refsource_FEDORA
FEDORA-2022-44373f6778 vendor-advisory, x_refsource_FEDORA
https://www.oracle.com/security-alerts/cpujul2022.html x_refsource_MISC
https://security.netapp.com/advisory/ntap-20220715-0003/ x_refsource_CONFIRM
GLSA-202209-17 vendor-advisory, x_refsource_GENTOO