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Gentoo Linux Advisory: Netpbm


Gentoo Linux Security Advisory GLSA 200410-02


http://security.gentoo.org/


Severity: Normal
Title: Netpbm: Multiple temporary file issues
Date: October 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
1 media-libs/netpbm <= 9.12-r4 >= 10.0

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

[ 1 ] CVE-2003-0924

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2003-0924

[ 2 ] US-CERT VU#487102

http://www.kb.cert.org/vuls/id/487102

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 http://bugs.gentoo.org.

License

Copyright 2004 Gentoo Foundation, Inc; referenced text belongs
to its owner(s).

The contents of this document are licensed under the Creative
Commons – Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/1.0

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