RHSA-2002_051

Vulnerability from csaf_redhat - Published: 2002-07-04 02:44 - Updated: 2024-11-21 22:19
Summary
Red Hat Security Advisory: : : : New Squid packages available
Severity
Important
Notes
Topic: New Squid packages are available which fix various security issues. [Updated 16 April 2003] Added packages for Red Hat Linux on IBM iSeries and pSeries systems.
Details: Squid is a high-performance proxy caching server. The following summary describes the various issues found and their resolutions. A problem was found in the code used by Squid to handle compressed DNS replies where a malicious DNS server could cause Squid to crash. This bug is fixed in the 2.4.STABLE6 release of Squid. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2002-0163 to this issue. Note that Red Hat Linux 7.3 is not vulnerable to this issue. Several buffer overflows have been found in the MSNT auth helper (msnt_auth) when configured to use denyusers or allowusers access control files. Several buffer overflows were found in the gopher client of Squid. It could be possible for a malicious gopher server to cause Squid to crash. A problem was found in the handling of the FTP data channel, possibly allowing abuse of the FTP proxy to bypass firewall rules or inject false FTP replies. Several possible buffer overflows were found in the code parsing FTP directories, potentially allowing an untrusted FTP server to crash Squid. Thanks go to Olaf Kirch and the Squid team for notifying us of the problems, and to the Squid team for providing patches. Note that Carp support has been disabled in this errata. If you need Carp support, you can reconfigure it with --enable-carp and rebuild the packages. All users of Squid are advised to upgrade to these errata packages which contain patches to correct each of these issues.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2002-0163

Heap-based buffer overflow in Squid before 2.4 STABLE4, and Squid 2.5 and 2.6 until March 12, 2002 distributions, allows remote attackers to cause a denial of service, and possibly execute arbitrary code, via compressed DNS responses.

Affected products
Product Identifier Version Remediation
Red Hat Linux 6.2
Red Hat / Red Hat Linux
 cpe:/o:redhat:linux:6.2 —
Vendor Fix fix
Red Hat Linux 7.0
Red Hat / Red Hat Linux
 cpe:/o:redhat:linux:7.0 —
Vendor Fix fix
Red Hat Linux 7.1
Red Hat / Red Hat Linux
 cpe:/o:redhat:linux:7.1 —
Vendor Fix fix
Red Hat Linux 7.2
Red Hat / Red Hat Linux
 cpe:/o:redhat:linux:7.2 —
Vendor Fix fix
Red Hat Linux 7.3
Red Hat / Red Hat Linux
 cpe:/o:redhat:linux:7.3 —
Vendor Fix fix
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.

Affected products
Fixed 5 products, the same list as for CVE-2002-0163
Threats
Impact Important
CVE-2002-0714

FTP proxy in Squid before 2.4.STABLE6 does not compare the IP addresses of control and data connections with the FTP server, which allows remote attackers to bypass firewall rules or spoof FTP server responses.

Affected products
Fixed 5 products, the same list as for CVE-2002-0163
Threats
Impact Moderate
CVE-2002-0715

Vulnerability in Squid before 2.4.STABLE6 related to proxy authentication credentials may allow remote web sites to obtain the user's proxy login and password.

Affected products
Fixed 5 products, the same list as for CVE-2002-0163
Threats
Impact Important
References
To clipboard 

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        "text": "Squid is a high-performance proxy caching server. The following summary\ndescribes the various issues found and their resolutions.\n\nA problem was found in the code used by Squid to handle compressed DNS\nreplies where a malicious DNS server could cause Squid to crash. This bug\nis fixed in the 2.4.STABLE6 release of Squid.  The Common Vulnerabilities\nand Exposures project (cve.mitre.org) has assigned the name CAN-2002-0163\nto this issue. Note that Red Hat Linux 7.3 is not vulnerable to this issue.\n\nSeveral buffer overflows have been found in the MSNT auth helper\n(msnt_auth) when configured to use denyusers or allowusers access control\nfiles.\n\nSeveral buffer overflows were found in the gopher client of Squid. It\ncould be possible for a malicious gopher server to cause Squid to crash.\n\nA problem was found in the handling of the FTP data channel, possibly\nallowing abuse of the FTP proxy to bypass firewall rules or inject false\nFTP replies.\n\nSeveral possible buffer overflows were found in the code parsing FTP\ndirectories, potentially allowing an untrusted FTP server to crash Squid.\n\nThanks go to Olaf Kirch and the Squid team for notifying us of the\nproblems, and to the Squid team for providing patches.\n\nNote that Carp support has been disabled in this errata. If you need Carp\nsupport, you can reconfigure it with --enable-carp and rebuild the packages.\n\nAll users of Squid are advised to upgrade to these errata packages which\ncontain patches to correct each of these issues.",
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}



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