abcm2ps: Buffer overflow vulnerability

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200412-18 / abcm2ps
Release Date	December 19, 2004
Latest Revision	December 19, 2004: 02
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-sound/abcm2ps	< 3.7.21	>= 3.7.21	All supported architectures

Related bugreports: #74702

Synopsis

abcm2ps is vulnerable to a buffer overflow that could lead to remote execution of arbitrary code.

2. Impact Information

Background

abcm2ps is a utility used to convert ABC music sheet files into PostScript format.

Description

Limin Wang has located a buffer overflow inside the put_words() function in the abcm2ps code.

Impact

A remote attacker could convince the victim to download a specially-crafted ABC file. Upon execution, this file would trigger the buffer overflow and lead to the execution of arbitrary code with the permissions of the user running abcm2ps.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All abcm2ps users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-sound/abcm2ps-3.7.21"

4. References

Updated December 19, 2004

Summary: This is a Gentoo Linux Security Advisory

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