Home/CVE/Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and message broker. A
CVE

CVE-2021-32625

Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and message broker. A

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 version 6.0 or newer, could be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a result of an incomplete fix by CVE-2021-29477.

The problem is fixed in version 6.2.4 and 6.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to use ACL configuration to prevent clients from using the STRALGO LCS command. On 64 bit systems which have the fixes of CVE-2021-29477 (6.2.3 or 6.0.13), it is sufficient to make sure that the proto-max-bulk-len config parameter is smaller than 2GB (default is 512MB).

HIGH · CVSS 7.5 EPSS 0.03841
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-190Integer Overflow or Wraparound
CWE-680Integer Overflow to Buffer Overflow
▤

Affected Products & Versions

3
redislabs redis>= 6.0.0 and < 6.0.14
redislabs redis>= 6.2.0 and < 6.2.4
fedoraproject fedoraall versions
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighOpenCanary - REDIS Action Command Attempt
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD02 Jun 2021 · 08:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

4
suse-csafopenSUSE-SU-2024:11299-1
suse-csafopenSUSE-SU-2021:2294-1
suse-csafSUSE-SU-2021:2294-1
suse-csafopenSUSE-SU-2021:0841-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/redis/redis/releases/tag/6.0.14Release NotesThird Party Advisory
https://github.com/redis/redis/releases/tag/6.2.4Release NotesThird Party Advisory
https://github.com/redis/redis/security/advisories/GHSA-46cp-x4x9-6pfqThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BHWOF7CBVUGDK3AN6H3BN3VNTH2TDUZZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SN7INTZFE34MIQJO7WDDTIY5LIBGN6GI/
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