libgsf: Buffer overflow

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200612-13 / libgsf
Release Date	December 12, 2006
Latest Revision	December 12, 2006: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
gnome-extra/libgsf	< 1.14.2	>= 1.14.2	All supported architectures

Related bugreports: #156693

Synopsis

libgsf improperly allocates memory allowing for a heap overflow and possibly the execution of arbitrary code.

2. Impact Information

Background

The GNOME Structured File Library is an I/O library that can read and write common file types and handle structured formats that provide file-system-in-a-file semantics.

Description

"infamous41md" has discovered that the "ole_init_info" function may allocate too little memory for storing the contents of an OLE document, resulting in a heap buffer overflow.

Impact

An attacker could entice a user to open a specially crafted OLE document, and possibly execute arbitrary code with the rights of the user opening the document.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All libgsf users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=gnome-extra/libgsf-1.14.2"

4. References

CVE-2006-4514

Page updated December 12, 2006

Summary: This is a Gentoo Linux Security Advisory

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