Squid Web Proxy Cache msnt_auth buffer overflow
| squid-msnt-helper-bo (9482) |  High Risk |
Description:
Squid is vulnerable to a buffer overflow in the MSNT auth helper component. Under certain configurations, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the proxy server to crash.
Platforms Affected:
- Conectiva, Linux 6.0
- Conectiva, Linux 7.0
- Conectiva, Linux 8.0
- MandrakeSoft, Mandrake Linux 7.1
- MandrakeSoft, Mandrake Linux 7.2
- MandrakeSoft, Mandrake Linux 8.0
- MandrakeSoft, Mandrake Linux 8.1
- MandrakeSoft, Mandrake Linux 8.2
- MandrakeSoft, Mandrake Linux Corporate Server 1.0.1
- MandrakeSoft, Mandrake Single Network Firewall 7.2
- RedHat, Enterprise Linux 2.1 AS
- RedHat, Linux 6.2
- RedHat, Linux 7
- RedHat, Linux 7.1
- RedHat, Linux 7.1 for iSeries
- RedHat, Linux 7.1 for pSeries
- RedHat, Linux 7.2
- RedHat, Linux 7.3
- SCO, Caldera OpenServer 5.0.5
- SCO, Caldera OpenServer 5.0.6
- Squid-Cache, Squid 2.0
- Squid-Cache, Squid 2.1
- Squid-Cache, Squid 2.2
- Squid-Cache, Squid 2.2.STABLE5
- Squid-Cache, Squid 2.3
- Squid-Cache, Squid 2.3.STABLE2
- Squid-Cache, Squid 2.3.STABLE3
- Squid-Cache, Squid 2.3.STABLE4
- Squid-Cache, Squid 2.3.STABLE4-11
- Squid-Cache, Squid 2.3.STABLE5
- Squid-Cache, Squid 2.4
- Squid-Cache, Squid 2.4.DEVEL2
- Squid-Cache, Squid 2.4.DEVEL4
- Squid-Cache, Squid 2.4.PRE-STABLE
- Squid-Cache, Squid 2.4.PRE-STABLE2
- Squid-Cache, Squid 2.4.STABLE1
- Squid-Cache, Squid 2.4.STABLE2
- Squid-Cache, Squid 2.4.STABLE2-2
- Squid-Cache, Squid 2.4.STABLE2-3
- Squid-Cache, Squid 2.4.STABLE4
- Squid-Cache, Squid 2.4.STABLE6
- SuSE, SuSE Linux 6.4
- SuSE, SuSE Linux 7.0
- SuSE, SuSE Linux 7.1
- SuSE, SuSE Linux 7.2
- SuSE, SuSE Linux 7.3
- SuSE, SuSE Linux 8.0
- SuSE, SuSE Linux Connectivity Server
- SuSE, SuSE Linux Enterprise Server
- Trustix, Secure Linux 1.1
- Trustix, Secure Linux 1.2
- Trustix, Secure Linux 1.5
Remedy:
Upgrade to the latest version of Squid Web Proxy Cache (2.4.STABLE7 or later), as listed in Squid Proxy Cache Security Update Advisory SQUID-2002:3. See References.
For Red Hat Linux:
Upgrade to the latest Squid package, as listed below. Refer to RHSA-2002:051-16 for more information. See References.
Red Hat 6.2: 2.4.STABLE6-6.6.2 or later
Red Hat 7.0: 2.4.STABLE6-6.7.0 or later
Red Hat 7.1: 2.4.STABLE6-6.7.1 or later
Red Hat 7.2 and 7.3: 2.4.STABLE6-6.7.3 or later
For Conectiva Linux:
Upgrade to the latest Squid package, as listed below. Refer to Conectiva Linux Security Announcement CLA-2002:506 for more information. See References.
Conectiva 6.0: 2.4.7-1U60_3cl or later
Conectiva 7.0: 2.4.7-1U70_3cl or later
Conectiva 8.0: 2.4.7-1U8_3cl or later
For Mandrake Linux:
Upgrade to the latest Squid package, as listed below. Refer to MandrakeSoft Security Advisory MDKSA-2002:044 : squid for more information. See References.
Linux-Mandrake 7.1, 7.2, Corporate Server 1.0.1and Single Network Firewall 7.2: 2.4.STABLE7-1.3mdk or later
Mandrake Linux 8.0: 2.4.STABLE7-1.2mdk or later
Mandrake Linux 8.1 and 8.2: 2.4.STABLE7-1.1mdk or later
For SuSE Linux:
Upgrade to the latest Squid package, as listed below. Refer to SuSE Security Announcement SuSE-SA:2002:025 for more information. See References.
SuSE Linux 8.0 (Intel): 2.4.STABLE6-2 or later
SuSE Linux 7.2 and 7.3 (Intel): 2.3.STABLE4-162 or later
SuSE Linux 7.1(Intel): 2.2.STABLE5-224 or later
SuSE Linux 6.4 and 7.0 (Intel): 2.2.STABLE5-223 or later
SuSE Linux 7.3 (Sparc): 2.3.STABLE4-57 or later
SuSE Linux 7.0 and 7.1(Sparc): 2.2.STABLE5-210 or later
SuSE Linux 6.4, 7.0 and 7.1(AXP Alpha): 2.2.STABLE5-230 or later
SuSE Linux 7.3 (PPC Power): 2.3.STABLE4-77 or later
SuSE Linux 7.1 (PPC Power): 2.2.STABLE5-203 or later
SuSE Linux 6.4 and 7.0 (PPC Power): 2.2.STABLE5-202 or later
For Trustix Secure Linux 1.1, 1.2, and 1.5:
Upgrade to the latest version of tcpdump (2.4.STABLE7-1tr or later), as listed in Trustix Secure Linux Security Advisory #2002-0062. See References.
For Caldera OpenServer 5.0.5 and 5.0.6:
Upgrade to the appropriate fixed binaries, as listed in SCO Security Advisory CSSA-2003-SCO.9. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Gain Access
References:
- Conectiva Linux Announcement CLSA-2002:506, squid at http://distro.conectiva.com/atualizacoes/?id=a&anuncio=000506.
- SCO Security Advisory CSSA-2003-SCO.9, Buffer overflows and other security vulnerabilities in Squid at ftp://ftp.sco.com/pub/updates/OpenServer/CSSA-2003-SCO.9/CSSA-2003-SCO.9.txt.
- Squid Proxy Cache Security Update Advisory SQUID-2002:3, Squid Proxy Cache Security Update Advisory at http://www.squid-cache.org/Advisories/SQUID-2002_3.txt.
- Trustix Secure Linux Security Advisory #2002-0062, squid at http://www.trustix.org/pipermail/tsl-announce/2002-July/000105.html.
- VulnWatch Mailing List, Mon Jun 03 2002 - 21:25:18 CDT, [DER #11] - Remotey exploitable fmt string bug in squid at http://archives.neohapsis.com/archives/vulnwatch/2002-q2/0087.html.
- BID-5155: Squid MSNT Auth Helper Buffer Overflow Vulnerability
- BID-5156: Squid FTP Directory Parsing Buffer Overflow Vulnerability
- BID-5157: Squid Gopher Proxy Buffer Overflow Vulnerability
- CVE-2002-0713: Buffer overflows in Squid before 2.4.STABLE6 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code (1) via the MSNT auth helper (msnt_auth) when using denyusers or allowusers files, (2) via the gopher client, or (3) via the FTP server directory listing parser when HTML output is generated.
- RHSA-2002-051: New Squid packages available
- RHSA-2002-130: squid security update
Reported:
Jul 03, 2002
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