Medium severity · published Mar 9, 2021
CVE-2021-28116
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
5.3
CVSS
12.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)12.9% · higher than 96% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0; 11.0 · source: NVD
FE
Fedora · Fedoraproject
33; 34 · source: NVD
SQ
Squid · Squid-cache
through 4.14; 5.0 through 5.0.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-28116
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-28116
Mailing List
http://www.openwall.com/lists/oss-security/2021/10/04/1
Product
http://www.squid-cache.org/Versions/
Broken Link
https://github.com/squid-cache/squid/security/advisories/GHSA-rgf3-9v3p-qp82
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/
Third Party Advisory
https://security.gentoo.org/glsa/202105-14
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