CVE-2020-15049: XSS
First published: Tue Jun 30 2020(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Squid-Cache Squid | >=2.0<=2.6 | |
| Squid-Cache Squid | >=3.1<=3.5.28 | |
| Squid-Cache Squid | >=4.0<4.12 | |
| Squid-Cache Squid | >=5.0<5.0.3 | |
| Squid-Cache Squid | =2.7 | |
| Squid-Cache Squid | =2.7-stable2 | |
| Squid-Cache Squid | =2.7-stable3 | |
| Squid-Cache Squid | =2.7-stable4 | |
| Squid-Cache Squid | =2.7-stable5 | |
| Squid-Cache Squid | =2.7-stable6 | |
| Squid-Cache Squid | =2.7-stable7 | |
| Squid-Cache Squid | =2.7-stable8 | |
| Squid-Cache Squid | =2.7-stable9 | |
| Fedoraproject Fedora | =31 | |
| IBM Security Guardium | <=10.5 | |
| IBM Security Guardium | <=10.6 | |
| IBM Security Guardium | <=11.0 | |
| IBM Security Guardium | <=11.1 | |
| IBM Security Guardium | <=11.2 | |
| IBM Security Guardium | <=11.3 | |
| debian/squid | 4.13-10+deb11u3 5.7-2+deb12u2 6.10-1 |
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Reference Links
- 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-ea12a34d338b962707d5078d6d1fc7c6eb119a22.patch
- http://www.squid-cache.org/Versions/v5/changesets/squid-5-485c9a7bb1bba88754e07ad0094647ea57a6eb8d.patch
- https://github.com/squid-cache/squid/security/advisories/GHSA-qf3v-rc95-96j5
- https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3RG5FGSTCAYVIJPJHIY3MRZ7NFT6HDO7/
- https://security.netapp.com/advisory/ntap-20210312-0001/
- https://usn.ubuntu.com/4551-1/
- https://www.debian.org/security/2020/dsa-4732
- https://launchpad.net/bugs/cve/CVE-2020-15049
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3RG5FGSTCAYVIJPJHIY3MRZ7NFT6HDO7/
- https://exchange.xforce.ibmcloud.com/vulnerabilities/184302
- https://www.ibm.com/support/pages/node/6455281 (Advisory)
- https://security-tracker.debian.org/tracker/CVE-2020-15049
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15049
- https://nvd.nist.gov/vuln/detail/CVE-2020-15049
- https://ubuntu.com/security/CVE-2020-15049
Frequently Asked Questions
What is CVE-2020-15049?
CVE-2020-15049 is a vulnerability in Squid-Cache Squid that allows for HTTP request smuggling due to improper input validation.
What is the severity of CVE-2020-15049?
CVE-2020-15049 has a severity rating of critical, with a CVSS score of 9.9.
How does CVE-2020-15049 affect Squid?
CVE-2020-15049 affects Squid versions before 4.12 and 5.x before 5.0.3.
How can I fix CVE-2020-15049 in Squid?
To fix CVE-2020-15049 in Squid, update to version 4.12 or 5.0.3 or later.
Where can I find more information about CVE-2020-15049?
More information about CVE-2020-15049 can be found at the following references: - [http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html](http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html) - [http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html](http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html) - [http://www.squid-cache.org/Versions/v4/changesets/squid-4-ea12a34d338b962707d5078d6d1fc7c6eb119a22.patch](http://www.squid-cache.org/Versions/v4/changesets/squid-4-ea12a34d338b962707d5078d6d1fc7c6eb119a22.patch)
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