Vulnerability CVE-2020-25097
Published: 2021-03-19

Description:
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.

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Squid-cache -> Squid 
Debian -> Debian linux 

 References:
http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_11.patch
http://www.squid-cache.org/Versions/v5/changesets/SQUID-2020_11.patch
https://github.com/squid-cache/squid/security/advisories/GHSA-jvf6-h9gj-pmj6
https://www.debian.org/security/2021/dsa-4873
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