Vulnerability Description
Redis is an open source, in-memory database that persists on disk. An integer overflow bug affecting all versions of Redis can be exploited to corrupt the heap and potentially be used to leak arbitrary contents of the heap or trigger remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration parameter to a very large value and constructing specially crafted commands to manipulate sets. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. 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.
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/a30d367a71b7017581cf1ca104242a3c644dec0fPatchThird Party Advisory
- https://github.com/redis/redis/security/advisories/GHSA-m3mf-8x9w-r27qThird 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/a30d367a71b7017581cf1ca104242a3c644dec0fPatchThird Party Advisory
- https://github.com/redis/redis/security/advisories/GHSA-m3mf-8x9w-r27qThird 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-2021-32687?
CVE-2021-32687 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 affecting all versions of Redis can be exploited to corrupt the heap and potentially be used to leak arbitrar...
How severe is CVE-2021-32687?
CVE-2021-32687 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-2021-32687?
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.