Detections
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Debian DSA-1623-1 : dnsmasq - DNS cache poisoning
medium Nessus Plugin ID 33772
Synopsis
The remote Debian host is missing a security-related update.Description
Dan Kaminsky discovered that properties inherent to the DNS protocol lead to practical DNS cache poisoning attacks. Among other things, successful attacks can lead to misdirected web traffic and email rerouting.This update changes Debian's dnsmasq packages to implement the recommended countermeasure: UDP query source port randomization. This change increases the size of the space from which an attacker has to guess values in a backwards-compatible fashion and makes successful attacks significantly more difficult.
This update also switches the random number generator to Dan Bernstein's SURF.
Solution
Upgrade the dnsmasq package.For the stable distribution (etch), this problem has been fixed in version 2.35-1+etch4. Packages for alpha will be provided later.
See Also
Plugin Details
Severity: Medium
ID: 33772
File Name: debian_DSA-1623.nasl
Version: 1.28
Type: local
Agent: unix
Family: Debian Local Security Checks
Published: 8/1/2008
Updated: 1/4/2021
Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.0
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.9
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
Vulnerability Information
CPE: p-cpe:/a:debian:debian_linux:dnsmasq, cpe:/o:debian:debian_linux:4.0
Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 7/31/2008
Reference Information
CVE: CVE-2008-1447, CVE-2008-4194