An issue was discovered in Squid 3.x and 4.x through 4.8. It allows attackers to smuggle HTTP requests through frontend software to a Squid instance that splits the HTTP Request pipeline differently. The resulting Response messages corrupt caches (between a client and Squid) with attacker-controlled content at arbitrary URLs. Effects are isolated to software between the attacker client and Squid. There are no effects on Squid itself, nor on any upstream servers. The issue is related to a request header containing whitespace between a header name and a colon.
References
Link | Resource |
---|---|
https://bugzilla.suse.com/show_bug.cgi?id=1156323 | Issue Tracking Third Party Advisory |
http://www.squid-cache.org/Advisories/SQUID-2019_10.txt | Third Party Advisory |
https://github.com/squid-cache/squid/pull/445 | Patch Third Party Advisory |
http://www.squid-cache.org/Versions/v4/changesets/squid-4-671ba97abe929156dc4c717ee52ad22fba0f7443.patch | Release Notes |
https://usn.ubuntu.com/4213-1/ | Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/ | Mailing List Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/ | Mailing List Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2019/12/msg00011.html | Third Party Advisory |
https://security.gentoo.org/glsa/202003-34 | |
https://www.debian.org/security/2020/dsa-4682 | |
https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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Configuration 3 (hide)
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Information
Published : 2019-11-26 09:15
Updated : 2020-07-10 17:15
NVD link : CVE-2019-18678
Mitre link : CVE-2019-18678
JSON object : View
CWE
CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Products Affected
debian
- debian_linux
canonical
- ubuntu_linux
fedoraproject
- fedora
squid-cache
- squid