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[ GLSA 200608-17 ] libwmf: Buffer overflow vulnerability
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PostPosted: Thu Aug 10, 2006 8:26 pm    Post subject: [ GLSA 200608-17 ] libwmf: Buffer overflow vulnerability Reply with quote

Gentoo Linux Security Advisory

Title: libwmf: Buffer overflow vulnerability (GLSA 200608-17)
Severity: normal
Exploitable: remote
Date: August 10, 2006
Bug(s): #139325
ID: 200608-17

Synopsis

libwmf is vulnerable to an integer overflow potentially resulting in the execution of arbitrary code.

Background

libwmf is a library for reading and converting vector images in Microsoft's native Windows Metafile Format (WMF).

Affected Packages

Package: media-libs/libwmf
Vulnerable: < 0.2.8.4
Unaffected: >= 0.2.8.4
Architectures: All supported architectures


Description

infamous41md discovered that libwmf fails to do proper bounds checking on the MaxRecordSize variable in the WMF file header. This could lead to an head-based buffer overflow.

Impact

By enticing a user to open a specially crafted WMF file, a remote attacker could cause a heap-based buffer overflow and execute arbitrary code with the permissions of the user running the application that uses libwmf.

Workaround

There is no known workaround for this issue.

Resolution

All libwmf users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libwmf-0.2.8.4"


References

CVE-2006-3376
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