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Vulnerability · Published Oct 4, 2021 · Assigned by GitHub_M

CVE-2021-32672Vulnerability in Lua Debugger in Redis

Medium 5.3

In plain English

A medium-severity out-of-bounds read in redis from redis. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)1.7%top 22.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

Redis is an open source, in-memory database that persists on disk. When using the Redis Lua Debugger, users can send malformed requests that cause the debugger’s protocol parser to read data beyond the actual buffer. This issue affects all versions of Redis with Lua debugging support (3.2 or newer). The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20redis6.2.6-r0ALPINE-CVE-2021-32672
Alpine:v3.21redis6.2.6-r0ALPINE-CVE-2021-32672
Alpine:v3.22redis6.2.6-r0ALPINE-CVE-2021-32672
Alpine:v3.23redis6.2.6-r0ALPINE-CVE-2021-32672
Alpine:v3.24redis6.2.6-r0ALPINE-CVE-2021-32672
Debian:12redis5:6.0.16-1DEBIAN-CVE-2021-32672
Debian:13redis5:6.0.16-1DEBIAN-CVE-2021-32672
Debian:14redis5:6.0.16-1DEBIAN-CVE-2021-32672

Affected products (as reported)

VendorProductVersions
redis redis >= 3.2.0, < 5.0.14>= 6.0.0, < 6.0.16>= 6.0.0, < 6.2.6

Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

References