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Gentoo Linux Security Advisory GLSA 200911-03 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: UW IMAP toolkit: Multiple vulnerabilities |
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Date: November 25, 2009 |
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Bugs: #245425, #252567 |
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ID: 200911-03 |
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Synopsis |
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======== |
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|
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Multiple vulnerabilities have been found in the UW IMAP toolkit and the |
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c-client library, the worst of which leading to the execution of |
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arbitrary code. |
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|
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Background |
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========== |
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|
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The UW IMAP toolkit is a daemon for the IMAP and POP3 network mail |
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protocols. The c-client library provides an API for IMAP, POP3 and |
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other protocols. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 net-libs/c-client < 2007e >= 2007e |
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2 net-mail/uw-imap < 2007e >= 2007e |
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------------------------------------------------------------------- |
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2 affected packages on all of their supported architectures. |
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------------------------------------------------------------------- |
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Description |
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=========== |
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|
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Multiple vulnerabilities were found in the UW IMAP toolkit: |
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* Aron Andersson and Jan Sahlin of Bitsec reported boundary errors in |
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the "tmail" and "dmail" utilities when processing overly long mailbox |
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names, leading to stack-based buffer overflows (CVE-2008-5005). |
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|
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* An error in smtp.c in the c-client library was found, leading to a |
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NULL pointer dereference vulnerability (CVE-2008-5006). |
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|
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* Ludwig Nussel reported an off-by-one error in the |
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rfc822_output_char() function in the RFC822BUFFER routines in the |
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c-client library, as used by the UW IMAP toolkit (CVE-2008-5514). |
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|
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Impact |
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====== |
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|
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A remote attacker could send an e-mail to a destination mailbox name |
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composed of a username and '+' character followed by a long string, |
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possibly leading to the execution of arbitrary code. A local attacker |
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could gain privileges by specifying a long folder extension argument to |
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the tmail or dmail program. Furthermore, a remote attacker could send a |
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specially crafted mail message to the UW IMAP toolkit or another daemon |
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using the c-client library, leading to a Denial of Service. A remote |
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SMTP server could respond to the QUIT command with a close of the TCP |
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connection instead of the expected 221 response code, possibly leading |
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to a Denial of Service. |
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|
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All c-client library users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-libs/c-client-2007e" |
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All UW IMAP toolkit users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-mail/uw-imap-2007e" |
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References |
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========== |
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[ 1 ] CVE-2008-5005 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5005 |
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[ 2 ] CVE-2008-5006 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5006 |
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[ 3 ] CVE-2008-5514 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5514 |
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|
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-200911-03.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2009 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/2.5 |
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