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--- Begin Message ---
- From: Raphael Marichez <falco at gentoo dot org>
- To: gentoo-announce at gentoo dot org
- Cc: bugtraq at securityfocus dot com, full-disclosure at lists dot grok dot org dot uk, security-alerts at linuxsecurity dot com
- Date: Fri, 15 Jun 2007 18:35:10 +0200
- Subject: [ GLSA 200706-05 ] ClamAV: Multiple Denials of Service
- Approved: news@gmane.org
- Archived-at: <http://permalink.gmane.org/gmane.linux.gentoo.announce/1293>
- Envelope-to: lnx-gentoo-announce@m.gmane.org
- Followup-to: gmane.comp.security.bugtraq
- Newsgroups: gmane.linux.gentoo.announce
- Organization: Gentoo Linux Security Team
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200706-05 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: ClamAV: Multiple Denials of Service Date: June 15, 2007 Bugs: #178082 ID: 200706-05 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== ClamAV contains several vulnerabilities leading to a Denial of Service. Background ========== ClamAV is a GPL virus scanner. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-antivirus/clamav < 0.90.3 >= 0.90.3 Description =========== Several vulnerabilities were discovered in ClamAV by various researchers: * Victor Stinner (INL) discovered that the OLE2 parser may enter in an infinite loop (CVE-2007-2650). * A boundary error was also reported by an anonymous researcher in the file unsp.c, which might lead to a buffer overflow (CVE-2007-3023). * The file unrar.c contains a heap-based buffer overflow via a modified vm_codesize value from a RAR file (CVE-2007-3123). * The RAR parsing engine can be bypassed via a RAR file with a header flag value of 10 (CVE-2007-3122). * The cli_gentempstream() function from clamdscan creates temporary files with insecure permissions (CVE-2007-3024). Impact ====== A remote attacker could send a specially crafted file to the scanner, possibly triggering one of the vulnerabilities. The two buffer overflows are reported to only cause Denial of Service. This would lead to a Denial of Service by CPU consumption or a crash of the scanner. The insecure temporary file creation vulnerability could be used by a local user to access sensitive data. Workaround ========== There is no known workaround at this time. Resolution ========== All ClamAV users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-antivirus/clamav-0.90.3" References ========== [ 1 ] CVE-2007-2650 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2650 [ 2 ] CVE-2007-3023 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3023 [ 3 ] CVE-2007-3024 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3024 [ 4 ] CVE-2007-3122 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3122 [ 5 ] CVE-2007-3123 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3123 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200706-05.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2007 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5Attachment: pgp00000.pgp
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