Executive Summary

Summary
Title Lighttpd: Buffer overflow
Informations
Name GLSA-200709-16 First vendor Publication 2007-09-27
Vendor Gentoo Last vendor Modification 2007-09-27
Severity (Vendor) High Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:P/I:P/A:P)
Cvss Base Score 6.8 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
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Detail

Synopsis

Lighttpd is vulnerable to the remote execution of arbitrary code.

Background

Lighttpd is a lightweight HTTP web server.

Description

Mattias Bengtsson and Philip Olausson have discovered a buffer overflow vulnerability in the function fcgi_env_add() in the file mod_fastcgi.c when processing overly long HTTP headers.

Impact

A remote attacker could send a specially crafted request to the vulnerable Lighttpd server, resulting in the remote execution of arbitrary code with privileges of the user running the web server. Note that mod_fastcgi is disabled in Gentoo's default configuration.

Workaround

Edit the file /etc/lighttpd/lighttpd.conf and comment the following line: "include mod_fastcgi.conf"

Resolution

All Lighttpd users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=www-servers/lighttpd-1.4.18"

References

[ 1 ] CVE-2007-4727 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4727

Availability

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

http://security.gentoo.org/glsa/glsa-200709-16.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-200709-16.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:18620
 
Oval ID: oval:org.mitre.oval:def:18620
Title: DSA-1362-1 lighttpd - several vulnerabilities
Description: Several vulnerabilities were discovered in lighttpd, a fast webserver with minimal memory footprint, which could allow the execution of arbitrary code via the overflow of CGI variables when mod_fcgi was enabled.
Family: unix Class: patch
Reference(s): DSA-1362-1
CVE-2007-3946
CVE-2007-3947
CVE-2007-3949
CVE-2007-3950
CVE-2007-4727
 Version: 7
Platform(s): Debian GNU/Linux 4.0
 Product(s): lighttpd
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 55

OpenVAS Exploits

Date Description
2009-02-27 Name : Fedora Update for lighttpd FEDORA-2007-2132
File : nvt/gb_fedora_2007_2132_lighttpd_fc7.nasl
2008-09-24 Name : Gentoo Security Advisory GLSA 200709-16 (lighttpd)
File : nvt/glsa_200709_16.nasl
2008-09-24 Name : Gentoo Security Advisory GLSA 200710-02 (php)
File : nvt/glsa_200710_02.nasl
2008-09-04 Name : FreeBSD Ports: lighttpd
File : nvt/freebsd_lighttpd0.nasl
2008-01-17 Name : Debian Security Advisory DSA 1362-2 (lighttpd)
File : nvt/deb_1362_2.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
36933 lighttpd mod_fastcgi HTTP Request Header Overflow

Snort® IPS/IDS

Date Description
2014-01-10 Lighttpd mod_fastcgi Extension CGI Variable Overwriting Vulnerability attempt
RuleID : 17386 - Revision : 10 - Type : SERVER-WEBAPP

Nessus® Vulnerability Scanner

Date Description
2007-11-06 Name : The remote Fedora host is missing a security update.
File : fedora_2007-2132.nasl - Type : ACT_GATHER_INFO
2007-10-17 Name : The remote openSUSE host is missing a security update.
File : suse_lighttpd-4532.nasl - Type : ACT_GATHER_INFO
2007-10-09 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200710-02.nasl - Type : ACT_GATHER_INFO
2007-10-03 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200709-16.nasl - Type : ACT_GATHER_INFO
2007-09-17 Name : The remote web server is affected by a buffer overflow vulnerability.
File : lighttpd_fastcgi_overflow.nasl - Type : ACT_ATTACK
2007-09-14 Name : The remote FreeBSD host is missing a security-related update.
File : freebsd_pkg_4b673ae75f9a11dc84dd000102cc8983.nasl - Type : ACT_GATHER_INFO
2007-09-03 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-1362.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-02-17 11:35:08
  • Multiple Updates