Squid Web Proxy Cache HTTP header cache poisoning
| squid-http-cache-poisoning (19060) |  Medium Risk |
Description:
Squid Web Proxy Cache could allow a remote attacker to perform cache poisoning, caused by improper handling of HTTP headers. By sending multiple Content-length headers along with specially-crafted requests, a remote attacker could poison the vulnerable Squid server's cache.
Platforms Affected:
- Canonical, Ubuntu 4.10
- Debian, Debian Linux 3.0
- Gentoo, Linux
- MandrakeSoft, Mandrake Linux 10.0
- MandrakeSoft, Mandrake Linux 10.0 AMD64
- MandrakeSoft, Mandrake Linux 10.1 X86_64
- MandrakeSoft, Mandrake Linux 10.1
- MandrakeSoft, Mandrake Linux 9.2 AMD64
- MandrakeSoft, Mandrake Linux 9.2
- MandrakeSoft, Mandrake Linux Corporate Server 2.1
- MandrakeSoft, Mandrake Linux Corporate Server 2.1 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 3.0
- MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
- RedHat, Enterprise Linux 2.1 AS
- RedHat, Enterprise Linux 2.1 ES
- RedHat, Enterprise Linux 3 WS
- RedHat, Enterprise Linux 3 Desktop
- RedHat, Enterprise Linux 3 ES
- RedHat, Enterprise Linux 3 AS
- RedHat, Enterprise Linux 4 WS
- RedHat, Enterprise Linux 4 Desktop
- RedHat, Enterprise Linux 4 AS
- RedHat, Enterprise Linux 4 ES
- RedHat, Linux Advanced Workstation 2.1 Itanium
- Squid-Cache, Squid 2.5.6
- Squid-Cache, Squid 2.5.STABLE1
- Squid-Cache, Squid 2.5.STABLE2
- Squid-Cache, Squid 2.5.STABLE3
- Squid-Cache, Squid 2.5.STABLE4
- Squid-Cache, Squid 2.5.STABLE5
- Squid-Cache, Squid 2.5.STABLE6
- Squid-Cache, Squid 2.5.STABLE7
- Squid-Cache, Squid 2.5.STABLE9
- SuSE, Linux Enterprise Server 8
- SuSE, SuSE Linux 8.1
- SuSE, SuSE Linux 8.2
- SuSE, SuSE Linux 9.0
- SuSE, SuSE Linux 9.1
- SuSE, SuSE Linux 9.2
- Turbolinux, Turbolinux 10 Server
- Turbolinux, Turbolinux 7 Server
- Turbolinux, Turbolinux 7 Workstation
- Turbolinux, Turbolinux 8 Server
- Turbolinux, Turbolinux 8 Workstation
- Turbolinux, Turbolinux Appliance Server 1.0 Hosting Ed
- Turbolinux, Turbolinux Appliance Server 1.0 Workgroup Ed
Remedy:
Apply the squid-2.5.STABLE7-header_parsing patch, available from the Squid Web Proxy Cache Web site. See References.
For Gentoo Linux:
Upgrade to the latest version of squid (2.5.7-r5 or later), as listed in GLSA 200502-04. See References.
For Red Hat Linux:
Upgrade to the latest squid package, as listed below. Refer to RHSA-2005:061-19 and RHSA-2005:060-20 for more information. See References.
Red Hat Enterprise Linux AS, ES, WS (v. 3) and Desktop 3: 2.5.STABLE3-6.3E.7 or later
Red Hat Enterprise Linux AS, ES, WS (v. 2.1) and Red Hat Linux Advanced Workstation 2.1: 2.4.STABLE7-1.21as.4 or later
For Debian GNU/Linux 3.0(woody):
Upgrade to the latest version of squid (2.4.6-2woody6 or later), as listed in DSA-667-1. See References.
For Ubuntu Linux:
Refer to USN-77-1 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Bypass Security
References:
- CIAC Information Bulletin P-138, Updated Squid Package Fixes Security Issues at http://www.ciac.org/ciac/bulletins/p-138.shtml.
- SGI Security Advisory 20050502-01-U, SGI Advanced Linux Environment 3 Security Update #37 at ftp://patches.sgi.com/support/free/security/advisories/20050502-01-U.asc.
- Squid Web Proxy Cache Web site, header_parsing patch at http://www.squid-cache.org/Versions/v2/2.5/bugs/squid-2.5.STABLE7-header_parsing.patch.
- BID-12412: Squid Proxy Oversize HTTP Headers Unspecified Remote Vulnerability
- BID-12433: Squid Proxy Malformed HTTP Header Parsing Cache Poisoning Vulnerability
- CVE-2005-0175: Squid 2.5 up to 2.5.STABLE7 allows remote attackers to poison the cache via an HTTP response splitting attack.
- DSA-667: squid -- several vulnerabilities
- GLSA-200502-04: Squid: Multiple vulnerabilities
- MDKSA-2005:034: Updated squid packages fix multiple vulnerabilities
- RHSA-2005-060: squid security update
- RHSA-2005-061: squid security update
- SECTRACK ID: 1012992: Squid Error in Parsing HTTP Content-Length Headers May Let Remote Users Poison the Cache
- SUSE-SA:2005:006: squid: remote command execution
- SUSE-SR:2005:003: SUSE Security Summary Report
Reported:
Jan 25, 2005
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