[ GLSA 200708-11 ] Lighttpd: Multiple vulnerabilities

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  Severity: Normal
     Title: Lighttpd: Multiple vulnerabilities
      Date: August 16, 2007
      Bugs: #185442
        ID: 200708-11

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Synopsis

Several vulnerabilities were reported in Lighttpd, most of them allowing a Denial of Service and potentially the remote execution of arbitrary code.

Background

Lighttpd is a lightweight HTTP web server.

Affected packages

     Package               /  Vulnerable  /                 Unaffected
    -------------------------------------------------------------------
  1  www-servers/lighttpd      < 1.4.16                      >= 1.4.16

Description

Stefan Esser discovered errors with evidence of memory corruption in the code parsing the headers. Several independent researchers also reported errors involving the handling of HTTP headers, the mod_auth and mod_scgi modules, and the limitation of active connections.

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Impact

A remote attacker can trigger any of these vulnerabilities by sending malicious data to the server, which may lead to a crash or memory exhaustion, and potentially the execution of arbitrary code. Additionally, access-deny settings can be evaded by appending a final / to a URL.

Workaround

There is no known workaround at this time.

Resolution

All Lighttpd users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-servers/lighttpd-1.4.16"

References

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  [ 1 ] CVE-2007-3946
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3946   [ 2 ] CVE-2007-3947
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3947   [ 3 ] CVE-2007-3948
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3948   [ 4 ] CVE-2007-3949
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3949   [ 5 ] CVE-2007-3950
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3950

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200708-11.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 2007 Gentoo Foundation, Inc; referenced text belongs to its owner(s).

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