High severity · published Jun 30, 2020
CVE-2020-15049
An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3
8.8
CVSS
5.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.7% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
31 · source: NVD
SQ
Squid · Squid-cache
2.0 through 2.6; 3.1 through 3.5.28; 4.0 before 4.12; 5.0 before 5.0.3; 2.7; 2.7; +7 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-15049
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-15049
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html
Patch
http://www.squid-cache.org/Versions/v4/changesets/squid-4-ea12a34d338b962707d5078d6d1fc7c6eb119a22.patch
Patch
http://www.squid-cache.org/Versions/v5/changesets/squid-5-485c9a7bb1bba88754e07ad0094647ea57a6eb8d.patch
Third Party Advisory
https://github.com/squid-cache/squid/security/advisories/GHSA-qf3v-rc95-96j5
lists.debian.org
https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html
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