CVE-2021-32625
HIGHEPSS 90th pctlDescription
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).
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
High risk: more likely to be exploited than 90% of all known CVEs.
References
Related Vulnerabilities
Other CWE-680 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2022-24834 | High | 7.0 | 41% | - | Fix |
| CVE-2021-32761 | High | 7.5 | 31% | - | Fix |
| CVE-2020-6116 | High | 7.8 | 28% | - | - |
| CVE-2021-40417 | Critical | 9.8 | 16% | - | - |
| CVE-2021-32628 | High | 7.5 | 14% | - | Fix |
| CVE-2021-30354 | High | 8.6 | 8.4% | - | - |
Common questions
How do I fix CVE-2021-32625?
Upgrade redis on debian 11 to 5:6.0.14-1 or later.
Is CVE-2021-32625 being actively exploited?
Not that we know of. CVE-2021-32625 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 4.2% is the estimated probability that it will be exploited in the next 30 days. That is higher than 90% of all scored CVEs.
How severe is CVE-2021-32625?
CVE-2021-32625 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2021-32625 affect?
Published advisories record a fix for redis (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
Embed a live status badge for CVE-2021-32625
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.