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CVE-2021-32625

7.5 · HIGH

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

Published Jun 2, 2021CWE-680EPSS 4.14%

Overview

CVE-2021-32625 is a high-severity vulnerability. It was published on June 2, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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. 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).

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/redis/redis/releases/tag/6.0.14GitHubgithub.com/redis/redis/releases/tag/6.2.4GitHubgithub.com/redis/redis/security/advisories/GHSA-46cp-x4x9-6pfqReflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BHWOF7CBVUGDK3AN6H3BN3VNTH2TDUZZ/Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SN7INTZFE34MIQJO7WDDTIY5LIBGN6GI/GitHubgithub.com/redis/redis/releases/tag/6.0.14GitHubgithub.com/redis/redis/releases/tag/6.2.4GitHubgithub.com/redis/redis/security/advisories/GHSA-46cp-x4x9-6pfqReflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BHWOF7CBVUGDK3AN6H3BN3VNTH2TDUZZ/Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SN7INTZFE34MIQJO7WDDTIY5LIBGN6GI/

How CyberStrike helps

Frequently asked questions

What is CVE-2021-32625?

CVE-2021-32625 is a high-severity vulnerability. It was published on June 2, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2021-32625?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-32625?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-32625?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-32625 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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