Executive Summary

Summary
Title Dnsmasq: Denial of Service
Informations
Name GLSA-201512-01 First vendor Publication 2015-12-17
Vendor Gentoo Last vendor Modification 2015-12-17
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:P/I:N/A:P)
Cvss Base Score 6.4 Attack Range Network
Cvss Impact Score 4.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

A vulnerability in Dnsmasq can lead to a Denial of Service condition.

Background

Dnsmasq is a lightweight, easy to configure DNS forwarder and DHCP server.

Description

An out-of-bounds read vulnerability has been found in the tcp_request function in Dnsmasq.

Impact

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

Workaround

There is no known workaround at this time.

Resolution

All Dnsmasq users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/dnsmasq-2.72-r2"

References

[ 1 ] CVE-2015-3294 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-3294

Availability

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

https://security.gentoo.org/glsa/201512-01

Original Source

Url : http://security.gentoo.org/glsa/glsa-201512-01.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-19 Data Handling

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:29242
 
Oval ID: oval:org.mitre.oval:def:29242
Title: SUSE-SU-2015:0979-1 -- Security update for dnsmasq (moderate)
Description: The DNS server dnsmasq was updated to fix one security issue and one non-security bug. The following vulnerability was fixed: * CVE-2015-3294: A remote unauthenticated attacker could have caused a denial of service (DoS) or read heap memory, potentially disclosing information such as performed DNS queries or encryption keys. (bsc#928867)
Family: unix Class: patch
Reference(s): SUSE-SU-2015:0979-1
CVE-2015-3294
 Version: 3
Platform(s): SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Desktop 12
 Product(s): dnsmasq
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 77
Os 1

Nessus® Vulnerability Scanner

Date Description
2017-10-03 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-2616-1.nasl - Type : ACT_GATHER_INFO
2017-10-03 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-2617-1.nasl - Type : ACT_GATHER_INFO
2017-10-03 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-2619-1.nasl - Type : ACT_GATHER_INFO
2017-05-01 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2016-1044.nasl - Type : ACT_GATHER_INFO
2015-12-22 Name : The remote DNS / DHCP service is affected by an information disclosure vulner...
File : dnsmasq_dos-CVE-2015-3294.nasl - Type : ACT_GATHER_INFO
2015-12-18 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201512-01.nasl - Type : ACT_GATHER_INFO
2015-06-10 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2015-1015-1.nasl - Type : ACT_GATHER_INFO
2015-06-02 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2015-0979-1.nasl - Type : ACT_GATHER_INFO
2015-05-26 Name : The remote FreeBSD host is missing one or more security-related updates.
File : freebsd_pkg_37569eb7012511e59d98080027ef73ec.nasl - Type : ACT_GATHER_INFO
2015-05-21 Name : The remote Debian host is missing a security update.
File : debian_DLA-225.nasl - Type : ACT_GATHER_INFO
2015-05-13 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2015-359.nasl - Type : ACT_GATHER_INFO
2015-05-06 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-3251.nasl - Type : ACT_GATHER_INFO
2015-05-05 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2593-1.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2015-12-19 13:22:59
  • Multiple Updates
2015-12-17 21:23:18
  • First insertion