[gentoo-announce] [ GLSA 200804-08 ] lighttpd: Multiple vulnerabilities

[news 28]

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Gentoo Linux Security Advisory GLSA 200804-08

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http://security.gentoo.org/

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Severity: Normal

Title: lighttpd: Multiple vulnerabilities

Date: April 10, 2008

Bugs: #212930, #214892

ID: 200804-08

 

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Synopsis

========

 

Multiple vulnerabilities in lighttpd may lead to information disclosure

or a Denial of Service.

 

Background

==========

 

lighttpd is a lightweight high-performance web server.

 

Affected packages

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

 

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

Package / Vulnerable / Unaffected

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

1 www-servers/lighttpd < 1.4.19-r2 >= 1.4.19-r2

 

Description

===========

 

Julien Cayzax discovered that an insecure default setting exists in

mod_userdir in lighttpd. When userdir.path is not set the default value

used is $HOME. It should be noted that the "nobody" user's $HOME is "/"

(CVE-2008-1270). An error also exists in the SSL connection code which

can be triggered when a user prematurely terminates his connection

(CVE-2008-1531).

 

Impact

======

 

A remote attacker could exploit the first vulnerability to read

arbitrary files. The second vulnerability can be exploited by a remote

attacker to cause a Denial of Service by terminating a victim's SSL

connection.

 

Workaround

==========

 

As a workaround for CVE-2008-1270 you can set userdir.path to a

sensible value, e.g. "public_html".

 

Resolution

==========

 

All lighttpd users should upgrade to the latest version:

 

# emerge --sync

# emerge --ask --oneshot --verbose ">=www-servers/lighttpd-1.4.19-r2"

 

References

==========

 

[ 1 ] CVE-2008-1270

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1270

[ 2 ] CVE-2008-1531

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1531

 

Availability

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

 

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

the Gentoo Security Website:

 

http://security.gentoo.org/glsa/glsa-200804-08.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

http://bugs.gentoo.org.

 

License

=======

 

Copyright 2008 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