Vulnerability · Published May 4, 2021 · Assigned by GitHub_M
CVE-2021-29478Vulnerability in the COPY command for large intsets
High 7.5
In plain English
A high-severity integer overflow 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 3.6% (higher than 90% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and message broker. An integer overflow bug in Redis 6.2 before 6.2.3 could be exploited to corrupt the heap and potentially result with remote code execution. Redis 6.0 and earlier are not directly affected by this issue. The problem is fixed in version 6.2.3. An additional workaround to mitigate the problem without patching the `redis-server` executable is to prevent users from modifying the `set-max-intset-entries` configuration parameter. This can be done using ACL to restrict unprivileged users from using the `CONFIG SET` command.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | redis | 5:6.0.13-1 | DEBIAN-CVE-2021-29478 |
| Debian:13 | redis | 5:6.0.13-1 | DEBIAN-CVE-2021-29478 |
| Debian:14 | redis | 5:6.0.13-1 | DEBIAN-CVE-2021-29478 |
Affected products (as reported)
Weakness: CWE-190 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://redis.io/ x_refsource_MISC
- https://github.com/redis/redis/security/advisories/GHSA-qh52-crrg-44g3 x_refsource_CONFIRM
- FEDORA-2021-3b267a756c vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-8b19c99d6a vendor-advisory, x_refsource_FEDORA
- GLSA-202107-20 vendor-advisory, x_refsource_GENTOO