Michael Niedermayer discovered a vulnerability in xbuffy, an utility for displaying message count in mailbox and newsgroup accounts. By sending carefully crafted messages to a mail or news account monitored by xbuffy, an attacker can trigger a stack-based buffer overflow, leading to xbuffy crash or even remote code execution.

For the oldstable distribution (squeeze), this problem has been fixed in version 3.3.bl.3.dfsg-8+deb6u1. For the stable distribution (wheezy), this problem has been fixed in version 3.3.bl.3.dfsg-8+deb7u1. For the testing distribution (jessie), this problem has been fixed in version 3.3.bl.3.dfsg-9. For the unstable distribution (sid), this problem has been fixed in version 3.3.bl.3.dfsg-9. We recommend that you upgrade your xbuffy packages.

Xbuffy is a program that displays how many unread mails you have in your different mailboxes. You can have different titles for the mailboxes, and define what shall happen when a new mail arrives. It can beep and invoke a shell command, for example.

xbuffy on Debian Linux

This check tests the installed software version using the apt package manager.

• http://www.debian.org/security/2014/dsa-2921.html

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Updated on 2015-03-25