Fetchmail versions 6.2.4 and earlier can be crashed by sending a
specially-crafted email to a fetchmail user. This problem occurs
because Fetchmail does not properly allocate memory for long lines in
an incoming email.
Impact
======
Fetchmail users who receive a malicious email may have their fetchmail
program crash.
Workaround
==========
While a workaround is not currently known for this issue, all users are
advised to upgrade to the latest version of the affected package.
Resolution
==========
Fetchmail users should upgrade to version 6.2.5 or later:
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 (at) gentoo (dot) org [email concealed] or alternatively, you may file a bug at
http://bugs.gentoo.org.
Gentoo Linux Security Advisory GLSA 200403-10
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http://security.gentoo.org
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Severity: Normal
Title: Fetchmail 6.2.5 fixes a remote DoS
Date: March 30, 2004
Bugs: #37717
ID: 200403-10
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Synopsis
========
Fetchmail versions 6.2.4 and earlier can be crashed by sending a
specially-crafted email to a fetchmail user.
Background
==========
Fetchmail is a utility that retrieves and forwards mail from remote
systems using IMAP, POP, and other protocols.
Affected packages
=================
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Package / Vulnerable / Unaffected
-------------------------------------------------------------------
net-mail/fetchmail <= 6.2.4 >= 6.2.5
Description
===========
Fetchmail versions 6.2.4 and earlier can be crashed by sending a
specially-crafted email to a fetchmail user. This problem occurs
because Fetchmail does not properly allocate memory for long lines in
an incoming email.
Impact
======
Fetchmail users who receive a malicious email may have their fetchmail
program crash.
Workaround
==========
While a workaround is not currently known for this issue, all users are
advised to upgrade to the latest version of the affected package.
Resolution
==========
Fetchmail users should upgrade to version 6.2.5 or later:
# emerge sync
# emerge -pv ">=net-mail/fetchmail-6.2.5"
# emerge ">=net-mail/fetchmail-6.2.5"
References
==========
[ 1 ] http://xforce.iss.net/xforce/xfdb/13450
[ 2 ] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0792
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 (at) gentoo (dot) org [email concealed] or alternatively, you may file a bug at
http://bugs.gentoo.org.
[ reply ]