Vulnerability Description
Redis is an open source, in-memory database that persists on disk. An integer overflow bug in the ziplist data structure used by all versions of Redis can be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves modifying the default ziplist configuration parameters (hash-max-ziplist-entries, hash-max-ziplist-value, zset-max-ziplist-entries or zset-max-ziplist-value) to a very large value, and then constructing specially crafted commands to create very large ziplists. The problem is fixed in Redis versions 6.2.6, 6.0.16, 5.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the above configuration parameters. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Redis | Redis | >= 5.0.0, < 5.0.14 |
| Fedoraproject | Fedora | 33 |
| Debian | Debian Linux | 10.0 |
| Netapp | Management Services For Element Software | - |
| Netapp | Management Services For Netapp Hci | - |
| Oracle | Communications Operations Monitor | 4.3 |
Related Weaknesses (CWE)
References
- https://github.com/redis/redis/commit/f6a40570fa63d5afdd596c78083d754081d80ae3PatchThird Party Advisory
- https://github.com/redis/redis/security/advisories/GHSA-vw22-qm3h-49prThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202209-17Third Party Advisory
- https://security.netapp.com/advisory/ntap-20211104-0003/Third Party Advisory
- https://www.debian.org/security/2021/dsa-5001Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatchThird Party Advisory
- https://github.com/redis/redis/commit/f6a40570fa63d5afdd596c78083d754081d80ae3PatchThird Party Advisory
- https://github.com/redis/redis/security/advisories/GHSA-vw22-qm3h-49prThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202209-17Third Party Advisory
FAQ
What is CVE-2021-32628?
CVE-2021-32628 is a vulnerability with a CVSS score of 7.5 (HIGH). Redis is an open source, in-memory database that persists on disk. An integer overflow bug in the ziplist data structure used by all versions of Redis can be exploited to corrupt the heap and potentia...
How severe is CVE-2021-32628?
CVE-2021-32628 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-32628?
Check the references section above for vendor advisories and patch information. Affected products include: Redis Redis, Fedoraproject Fedora, Debian Debian Linux, Netapp Management Services For Element Software, Netapp Management Services For Netapp Hci.