GLSA 200410-02: Netpbm: Multiple temporary file issues

http://security.gentoo.org/

Severity:	normal
Title:	Netpbm: Multiple temporary file issues
Date:	10/04/2004
Bugs:	#65647
ID:	200410-02

Synopsis

Utilities included in old Netpbm versions are vulnerable to multiple temporary files issues, potentially allowing a local attacker to overwrite files with the rights of the user running the utility.

Background

Netpbm is a toolkit containing more than 200 separate utilities for manipulation and conversion of graphic images.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
media-libs/netpbm	<= 9.12-r4	>= 10.0	All supported architectures

Description

Utilities contained in the Netpbm package prior to the 9.25 version contain defects in temporary file handling. They create temporary files with predictable names without checking first that the target file doesn't already exist.

Impact

A local attacker could create symbolic links in the temporary files directory, pointing to a valid file somewhere on the filesystem. When a user or a tool calls one of the affected utilities, this would result in file overwriting with the rights of the user running the utility.

Workaround

There is no known workaround at this time.

Resolution

All Netpbm users should upgrade to an unaffected version:

    # emerge sync

    # emerge -pv ">=media-libs/netpbm-10.0"
    # emerge ">=media-libs/netpbm-10.0"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200410-02.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.