GLSA Advocate
Joined: 12 May 2004 Posts: 2663
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Posted: Wed Nov 25, 2009 2:26 pm Post subject: [ GLSA 200911-03 ] UW IMAP toolkit: Multiple vulnerabilities |
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Gentoo Linux Security Advisory
Title: UW IMAP toolkit: Multiple vulnerabilities (GLSA 200911-03)
Severity: high
Exploitable: remote
Date: November 25, 2009
Bug(s): #245425, #252567
ID: 200911-03
Synopsis
Multiple vulnerabilities have been found in the UW IMAP toolkit and the
c-client library, the worst of which leading to the execution of arbitrary
code.
Background
The UW IMAP toolkit is a daemon for the IMAP and POP3 network mail
protocols. The c-client library provides an API for IMAP, POP3 and
other protocols.
Affected Packages
Package: net-libs/c-client
Vulnerable: < 2007e
Unaffected: >= 2007e
Architectures: All supported architectures
Package: net-mail/uw-imap
Vulnerable: < 2007e
Unaffected: >= 2007e
Architectures: All supported architectures
Description
Multiple vulnerabilities were found in the UW IMAP toolkit:
- Aron Andersson and Jan Sahlin of Bitsec reported boundary errors in
the "tmail" and "dmail" utilities when processing overly long mailbox
names, leading to stack-based buffer overflows (CVE-2008-5005). - An error in smtp.c in the c-client library was found, leading to a
NULL pointer dereference vulnerability (CVE-2008-5006). - Ludwig
Nussel reported an off-by-one error in the rfc822_output_char()
function in the RFC822BUFFER routines in the c-client library, as used
by the UW IMAP toolkit (CVE-2008-5514).
Impact
A remote attacker could send an e-mail to a destination mailbox name
composed of a username and '+' character followed by a long string,
possibly leading to the execution of arbitrary code. A local attacker
could gain privileges by specifying a long folder extension argument to
the tmail or dmail program. Furthermore, a remote attacker could send a
specially crafted mail message to the UW IMAP toolkit or another daemon
using the c-client library, leading to a Denial of Service. A remote
SMTP server could respond to the QUIT command with a close of the TCP
connection instead of the expected 221 response code, possibly leading
to a Denial of Service.
Workaround
There is no known workaround at this time.
Resolution
All c-client library users should upgrade to the latest version:
Code: | # emerge --sync
# emerge --ask --oneshot --verbose ">=net-libs/c-client-2007e" |
All UW IMAP toolkit users should upgrade to the latest version:
Code: | # emerge --sync
# emerge --ask --oneshot --verbose ">=net-mail/uw-imap-2007e" |
References
CVE-2008-5005
CVE-2008-5006
CVE-2008-5514 |
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