CVE-2021-28116

Description

Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds read in WCCP protocol data. This can be leveraged as part of a chain for remote code execution as nobody.

Category

3.7
CVSS
Severity: Low
CVSS 3.1 •
CVSS 2.0 •
EPSS 9.42% Top 10%
Vendor Advisory gentoo.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory squid-cache.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.squid-cache.org/Versions/ product vendor advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-157/ vdb entry third party advisory
https://github.com/squid-cache/squid/security/advisories/GHSA-rgf3-9v3p-qp82 broken link
https://security.gentoo.org/glsa/202105-14 third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/ vendor advisory
http://www.openwall.com/lists/oss-security/2021/10/04/1 third party advisory mailing list
https://www.debian.org/security/2022/dsa-5171 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-28116?
CVE-2021-28116 has been scored as a low severity vulnerability.
How to fix CVE-2021-28116?
To fix CVE-2021-28116, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-28116 being actively exploited in the wild?
It is possible that CVE-2021-28116 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~9% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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