lame: multiple vulnerabilities

[Agostino Sarubbo <ago () gentoo org>]

Hello all.

I discovered some crashes (which will follow one-by-one) in lame.

Lame was fuzzed in the past by someone else so I take the opportunity 
during the CVE request to insert also some past bugs.

1) Invalid read - CVE-2015-9099
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=775959

2) Null pointer dereference - CVE-2015-9100
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=777160

3) Invalid read - CVE-2015-9100
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=777161

However, mitre decided that the bug N°3, CVE-2015-9100, can share the 
same CVE ID of https://blogs.gentoo.org/ago/2017/06/17/lame-heap-based-buffer-overflow-in-fill_buffer_resample-util-c/

At this point, I'd like to mention that mitre won't assign anymore CVE IDs 
for issues related to the Undefined Behavior Sanitizer, unless there are 
informations about the exploitability.
http://common-vulnerabilities-and-exposures-cve-board.1128451.n5.nabble.com/Current-standards-criteria-for-Undefined-Behavior-td730.html#a768

The CVE IDs assigned in the past for the undefined behavior issues remain 
valid. I will share anyway my findings about the undefined behavior issues. 
They include, for completeness, some bugs that regard the frontend. You 
can ignore them.

-- 
Agostino Sarubbo
Gentoo Linux Developer