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CVE-2021-29477

Public on 2021-05-04
Modified on 2023-06-09
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 version 6.0 or newer could be exploited using the `STRALGO LCS` command to corrupt the heap and potentially result with remote code execution. The problem is fixed in version 6.2.3 and 6.0.13. 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.

Severity
Important
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CVSS v3 Base Score
8.8
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Redis6 Extra redis 2023-08-21 21:00 ALAS2REDIS6-2023-008

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD CVSSv2 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P
NVD CVSSv3 7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Red Hat: CVE-2021-29477 Mitre: CVE-2021-29477 FAQs regarding Amazon Linux ALAS/CVE Severity