Bug 343341 – net-mail/vpopmail _FORTIFY_SOURCE indicates presence of overflow

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Diego Elio Pettenò (RETIRED) 2010-10-30 09:32:49 UTC]

You're receiving this bug because the package in Summary has produced _FORTIFY_SOURCE related warnings indicating the presence of a sure overflow in a static buffer.

Even though this is not always an indication of a security problem it might even be. So please check this out ASAP.

By the way, _FORTIFY_SOURCE is disabled when you disable optimisation, so don't try finding out the cause using -O0.

Thanks,
Your friendly neighborhood tinderboxer

[Comment 1 Diego Elio Pettenò (RETIRED) 2010-10-30 09:33:01 UTC]

Created attachment 252563 [details]
Build log

[Comment 2 Kevin Pyle 2010-10-31 00:06:48 UTC]

This is a typical case of using a magic constant as the snprintf length argument instead of using sizeof to let the compiler insert the proper length.  The offending calls in vlistlib.c can be fixed by doing:

sed -e 's/\(snprintf(\s*\(LI->[a-zA-Z_]\+\),\s*\)[a-zA-Z_]\+,/\1 sizeof(\2),/'

[Comment 3 Robin Johnson 2013-05-30 23:21:21 UTC]

InCVS