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[news 28]

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Gentoo Linux Security Advisory GLSA 201110-10

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http://security.gentoo.org/

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Severity: Normal

Title: Wget: User-assisted file creation or overwrite

Date: October 13, 2011

Bugs: #329941

ID: 201110-10

 

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Synopsis

========

 

Insecure usage of server provided filenames may allow the creation or

overwriting of local files.

 

Background

==========

 

GNU Wget is a free software package for retrieving files using HTTP,

HTTPS and FTP, the most widely-used Internet protocols.

 

Affected packages

=================

 

-------------------------------------------------------------------

Package / Vulnerable / Unaffected

-------------------------------------------------------------------

1 net-misc/wget < 1.12-r2 >= 1.12-r2

 

Description

===========

 

It was discovered that Wget was unsafely trusting server-provided

filenames. This allowed attackers to overwrite or create files on the

user's system by sending a redirect from the expected URL to another

URL specifying the targeted file.

 

Impact

======

 

An unauthenticated remote attacker may be able to create or overwrite

local files by enticing the user to open an attacker controlled URL,

possibly leading to execution of arbitrary code.

 

Workaround

==========

 

There is no known workaround at this time.

 

Resolution

==========

 

All Wget users should upgrade to the latest version:

 

# emerge --sync

# emerge --ask --oneshot --verbose ">=net-misc/wget-1.12-r2"

 

NOTE: This is a legacy GLSA. Updates for all affected architectures are

available since September 19, 2010. It is likely that your system is

already no longer affected by this issue.

 

References

==========

 

[ 1 ] CVE-2010-2252

http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-2252

 

Availability

============

 

This GLSA and any updates to it are available for viewing at

the Gentoo Security Website:

 

http://security.gentoo.org/glsa/glsa-201110-10.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 ( -at -) gentoo.org or alternatively, you may file a bug at

https://bugs.gentoo.org.

 

License

=======

 

Copyright 2011 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/2.5