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mpg123: Heap overflow


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200607-01 / mpg123
Release Date July 03, 2006
Latest Revision July 29, 2006: 02
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
media-sound/mpg123 < 0.59s-r11 >= 0.59s-r11 All supported architectures

Related bugreports: #133988


A heap overflow in mpg123 was discovered, which could result in the execution of arbitrary code.

2.  Impact Information


mpg123 is a real time audio player designed for the MPEG format.


In httpdget.c, a variable is assigned to the heap, and is supposed to receive a smaller allocation. As this variable was not terminated properly, strncpy() will overwrite the data assigned next in memory.


By enticing a user to visit a malicious URL, an attacker could possibly execute arbitrary code with the rights of the user running mpg123.

3.  Resolution Information


There is no known workaround at this time.


All mpg123 users should update to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-sound/mpg123-0.59s-r11"

4.  References


Page updated July 03, 2006

Summary: This is a Gentoo Linux Security Advisory

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