Vulnerability 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 Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Squid-Cache | Squid | >= 2.0, <= 2.6 |
| Fedoraproject | Fedora | 31 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-ea12a34d338b962707d507PatchVendor Advisory
- http://www.squid-cache.org/Versions/v5/changesets/squid-5-485c9a7bb1bba88754e07aPatchVendor Advisory
- https://github.com/squid-cache/squid/security/advisories/GHSA-qf3v-rc95-96j5Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.netapp.com/advisory/ntap-20210312-0001/
- https://usn.ubuntu.com/4551-1/
- https://www.debian.org/security/2020/dsa-4732
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-ea12a34d338b962707d507PatchVendor Advisory
- http://www.squid-cache.org/Versions/v5/changesets/squid-5-485c9a7bb1bba88754e07aPatchVendor Advisory
- https://github.com/squid-cache/squid/security/advisories/GHSA-qf3v-rc95-96j5Third Party Advisory
FAQ
What is CVE-2020-15049?
CVE-2020-15049 is a vulnerability with a CVSS score of 9.9 (CRITICAL). 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 ...
How severe is CVE-2020-15049?
CVE-2020-15049 has been rated CRITICAL with a CVSS base score of 9.9/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2020-15049?
Check the references section above for vendor advisories and patch information. Affected products include: Squid-Cache Squid, Fedoraproject Fedora.