Executive Summary

Summary
Title MaraDNS: Denial of Service
Informations
Name GLSA-201202-03 First vendor Publication 2012-02-22
Vendor Gentoo Last vendor Modification 2012-02-22
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 hash collision vulnerability in MaraDNS allows remote attackers to cause a Denial of Service condition.

Background

MaraDNS is a proxy DNS server with permanent caching.

Description

MaraDNS does not properly randomize hash functions to protect against hash collision attacks.

Impact

A remote attacker could send many specially crafted DNS recursive queries, possibly resulting in a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All MaraDNS users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/maradns-1.4.09"

References

[ 1 ] CVE-2012-0024 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0024

Availability

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

http://security.gentoo.org/glsa/glsa-201202-03.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-201202-03.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-400 Uncontrolled Resource Consumption ('Resource Exhaustion')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 83

OpenVAS Exploits

Date Description
2012-03-12 Name : Gentoo Security Advisory GLSA 201202-03 (maradns)
File : nvt/glsa_201202_03.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
78110 MaraDNS Hash Collission Form Parameter Parsing Remote DoS

MaraDNS contains a flaw that may allow a remote denial of service. The issue is triggered when an attacker sends multiple crafted parameters which trigger hash collisions, and will result in loss of availability for the program via CPU consumption.

Nessus® Vulnerability Scanner

Date Description
2014-04-11 Name : The DNS server running on the remote host is affected by a denial of service ...
File : maradns_1_4_10.nasl - Type : ACT_GATHER_INFO
2012-02-23 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201202-03.nasl - Type : ACT_GATHER_INFO

Alert History

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0
Date Informations
2014-02-17 11:37:11
  • Multiple Updates