Subject: metamail: crashes with very long boundaries in messages Package: metamail Version: 2.7-50 Severity: important Tags: patch Hello, I have found that metamail crashes when processing messages with very long boundaries. They cause a buffer overflow, which doesn't seem to be exploitable: metaur@metaur:~$ /usr/bin/metamail < metamail.txt From: <metaur@localhost> To: <metaur@localhost> Subject: metamail crash bug *** glibc detected *** free(): invalid next size (normal): 0x0805fc30 *** Aborted metaur@metaur:~$ I have attached a test message, as well as a patch. // Ulf Harnhammar -- System Information: Debian Release: testing/unstable APT prefers testing APT policy: (500, 'testing') Architecture: i386 (i686) Shell: /bin/sh linked to /bin/bash Kernel: Linux 2.6.12-1-686 Locale: LANG=en_US, LC_CTYPE=en_US (charmap=ISO-8859-1) Versions of packages metamail depends on: ii libc6 2.3.5-13 GNU C Library: Shared libraries an ii libncurses5 5.5-1 Shared libraries for terminal hand Versions of packages metamail recommends: ii mime-support 3.35-1 MIME files 'mime.types' & 'mailcap ii sharutils 1:4.2.1-15 shar, unshar, uuencode, uudecode -- no debconf information -- _______________________________________________ Surf the Web in a faster, safer and easier way: Download Opera 8 at http://www.opera.com Powered by Outblaze
From: <metaur@localhost> To: <metaur@localhost> Subject: metamail crash bug MIME-Version: 1.0 Content-Type: multipart/alternative; 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Content-Transfer-Encoding: 7bit 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Content-Type: text/html <h1>metamail crash bug (HTML)</h1> 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Content-Type: text/plain metamail crash bug (plain text) 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