GLSA 200507-28: AMD64 x86 emulation base libraries: Buffer overflow

http://security.gentoo.org/

Severity:	high
Title:	AMD64 x86 emulation base libraries: Buffer overflow
Date:	07/30/2005
Bugs:	#100686
ID:	200507-28

Synopsis

The x86 emulation base libraries for AMD64 contain a vulnerable version of zlib which could potentially lead to execution of arbitrary code.

Background

The x86 emulation base libraries for AMD64 emulate the x86 (32-bit) architecture on the AMD64 (64-bit) architecture.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
app-emulation/emul-linux-x86-baselibs	< 2.1.2	>= 2.1.2	AMD64

Description

Earlier versions of emul-linux-x86-baselibs contain a vulnerable version of zlib, which may lead to a buffer overflow.

Impact

By creating a specially crafted compressed data stream, attackers can overwrite data structures for applications that use the x86 emulation base libraries for AMD64, resulting in a Denial of Service and potentially arbitrary code execution.

Workaround

There is no known workaround at this time.

Resolution

All AMD64 x86 emulation base libraries users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose app-emulation/emul-linux-x86-baselibs

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200507-28.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.