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Gentoo: GLSA 201110-10 Normal: Wget User-Assisted File Overwrite

gentoo
Calendar Grey October 13, 2011
Dist Gentoo Esm H88
To secure Wget, make sure you're updated to the most current version, thereby avoiding potential file replacement from harmful links on Gentoo systems.
Insecure usage of server provided filenames may allow the creation or overwriting of local files.

Summary

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.

Topics%20covered

Topics Covered

security advisory gentoo file overwrite remote attack wget normal severity user-assisted

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: https://security.gentoo.org/glsa/201110-10
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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.

Severity: Normal
Title: Wget: User-assisted file creation or overwrite
Date: October 13, 2011
Bugs: #329941
ID: 201110-10

Topics%20covered

Topics Covered

security advisory gentoo file overwrite remote attack wget normal severity user-assisted

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.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/wget < 1.12-r2 >= 1.12-r2

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.

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