uw-imap: Remote buffer overflow

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200510-10 / uw-imap
Release Date	October 11, 2005
Latest Revision	October 11, 2005: 01
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-mail/uw-imap	< 2004g	>= 2004g	All supported architectures

Related bugreports: #108206

Synopsis

uw-imap is vulnerable to remote overflow of a buffer in the IMAP server leading to execution of arbitrary code.

2. Impact Information

Background

uw-imap is the University of Washington's IMAP and POP server daemons.

Description

Improper bounds checking of user supplied data while parsing IMAP mailbox names can lead to overflowing the stack buffer.

Impact

Successful exploitation requires an authenticated IMAP user to request a malformed mailbox name. This can lead to execution of arbitrary code with the permissions of the IMAP server.

3. Resolution Information

Workaround

There are no known workarounds at this time.

Resolution

All uw-imap users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-mail/uw-imap-2004g"

4. References

Page updated October 11, 2005

Summary: This is a Gentoo Linux Security Advisory

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