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CVE-2020-15049

nvd nist
Published: Jun 30, 2020Modified: Jun 17, 2026

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8.8
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 2.8 / Impact: 5.9
Source: NVD

Description

An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A Request Smuggling and Poisoning attack can succeed against the HTTP cache. The client sends an HTTP request with a Content-Length header containing "+\ "-" or an uncommon shell whitespace character prefix to the length field-value.

Affected (14)

Squid Cache
1 product
Squid
Fedoraproject
1 product
Fedora
Configuration A
13 vulnerable
Vulnerable SoftwareAffected Versions
Squid Cache
Squid
From 2.0 to 2.6
Squid
From 3.1 to 3.5.28
Squid
From 4.0 to 4.12
Squid
From 5.0 to 5.0.3
Squid
Version 2.7
Squid
Version 2.7 stable2
Squid
Version 2.7 stable3
Squid
Version 2.7 stable4
Squid
Version 2.7 stable5
Squid
Version 2.7 stable6
Squid
Version 2.7 stable7
Squid
Version 2.7 stable8
Squid
Version 2.7 stable9
Configuration B
1 vulnerable
Vulnerable SoftwareAffected Versions
Fedora
Version 31

Related CWEs

CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

References (20)

Source: cve@mitre.org
Source: cve@mitre.org
Source: cve@mitre.org
PatchVendor Advisory
Source: cve@mitre.org
PatchVendor Advisory
Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
Source: cve@mitre.org
Source: cve@mitre.org
Source: cve@mitre.org
Source: cve@mitre.org
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
PatchVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.