CVE-2020-25097

moderate-risk

Published 2021-03-19

An issue was discovered in Squid through 4.13 and 5.x through 5.0.4. Due to improper input validation, it allows a trusted client to perform HTTP Request Smuggling and access services otherwise forbidden by the security controls. This occurs for certain uri_whitespace configuration settings.

Do I need to act?

0.58% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 8.6/10 High

NETWORK / LOW complexity

Affected Products (6)

Squid

Debian Linux

Fedora

Cloud Manager

Affected Vendors

Debian Squid-Cache Fedoraproject Netapp

References (18)

Mailing List http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_11.patch

Mailing List http://www.squid-cache.org/Versions/v5/changesets/SQUID-2020_11.patch

Patch https://github.com/squid-cache/squid/security/advisories/GHSA-jvf6-h9gj-pmj6

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...

Third Party Advisory https://security.gentoo.org/glsa/202105-14

Third Party Advisory https://security.netapp.com/advisory/ntap-20210727-0010/

Third Party Advisory https://www.debian.org/security/2021/dsa-4873

Mailing List http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_11.patch

Mailing List http://www.squid-cache.org/Versions/v5/changesets/SQUID-2020_11.patch

Patch https://github.com/squid-cache/squid/security/advisories/GHSA-jvf6-h9gj-pmj6

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...

Third Party Advisory https://security.gentoo.org/glsa/202105-14

Third Party Advisory https://security.netapp.com/advisory/ntap-20210727-0010/

Third Party Advisory https://www.debian.org/security/2021/dsa-4873

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moderate-risk

Severity 29/34 · Critical

Exploitability 2/34 · Minimal

Exposure 13/34 · Low