Executive Summary

Summary
Title Syslog-ng: Denial of Service
Informations
Name GLSA-200712-19 First vendor Publication 2007-12-29
Vendor Gentoo Last vendor Modification 2007-12-29
Severity (Vendor) Normal 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:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

A Denial of Service vulnerability has been discovered in Syslog-ng.

Background

Syslog-ng is a flexible and scalable system logger.

Description

Oriol Carreras reported a NULL pointer dereference in the log_msg_parse() function when processing timestamps without a terminating whitespace character.

Impact

A remote attacker could send a specially crafted event to a vulnerable Syslog-ng server, resulting in a crash.

Workaround

There is no known workaround at this time.

Resolution

All Syslog-ng users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/syslog-ng-2.0.6"

References

[ 1 ] CVE-2007-6437 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6437

Availability

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

http://security.gentoo.org/glsa/glsa-200712-19.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-200712-19.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-20 Improper Input Validation

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:20146
 
Oval ID: oval:org.mitre.oval:def:20146
Title: DSA-1464-1 syslog-ng - denial of service
Description: Oriol Carreras discovered that syslog-ng, a next generation logging daemon can be tricked into dereferencing a NULL pointer through malformed timestamps, which can lead to denial of service and the disguise of an subsequent attack, which would otherwise be logged.
Family: unix Class: patch
Reference(s): DSA-1464-1
CVE-2007-6437
 Version: 5
Platform(s): Debian GNU/Linux 4.0
 Product(s): syslog-ng
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:8172
 
Oval ID: oval:org.mitre.oval:def:8172
Title: DSA-1464 syslog-ng -- null pointer dereference
Description: Oriol Carreras discovered that syslog-ng, a next generation logging daemon can be tricked into dereferencing a NULL pointer through malformed timestamps, which can lead to denial of service and the disguise of a subsequent attack, which would otherwise be logged. The old stable distribution (sarge) is not affected. For the stable distribution (etch), this problem has been fixed in version 2.0.0-1etch1. For the unstable distribution (sid), this problem has been fixed in version 2.0.6-1. We recommend that you upgrade your syslog-ng package.
Family: unix Class: patch
Reference(s): DSA-1464
CVE-2007-6437
 Version: 3
Platform(s): Debian GNU/Linux 4.0
 Product(s): syslog-ng
Definition Synopsis:

OpenVAS Exploits

Date Description
2009-02-17 Name : Fedora Update for syslog-ng FEDORA-2008-0523
File : nvt/gb_fedora_2008_0523_syslog-ng_fc8.nasl
2009-02-17 Name : Fedora Update for syslog-ng FEDORA-2008-0559
File : nvt/gb_fedora_2008_0559_syslog-ng_fc7.nasl
2008-09-24 Name : Gentoo Security Advisory GLSA 200712-19 (syslog-ng)
File : nvt/glsa_200712_19.nasl
2008-01-31 Name : Debian Security Advisory DSA 1464-1 (syslog-ng)
File : nvt/deb_1464_1.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
39551 syslog-ng Crafted Timestamp NULL Pointer Dereference Remote DoS

syslog-ng contains a flaw that may allow a remote denial of service. The issue is triggered when a crafted timestamp triggers a NULL pointer dereference , and will result in loss of availability for the service.

Nessus® Vulnerability Scanner

Date Description
2008-01-21 Name : The remote Fedora host is missing a security update.
File : fedora_2008-0523.nasl - Type : ACT_GATHER_INFO
2008-01-21 Name : The remote Fedora host is missing a security update.
File : fedora_2008-0559.nasl - Type : ACT_GATHER_INFO
2008-01-16 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-1464.nasl - Type : ACT_GATHER_INFO
2007-12-31 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200712-19.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-02-17 11:35:26
  • Multiple Updates