Debian DLA-107-1 : unbound security update

Medium Nessus Plugin ID 82091

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VPR Score: 3.6

Synopsis

The remote Debian host is missing a security update.

Description

Florian Maury from ANSSI discovered that unbound, a validating, recursive, and caching DNS resolver, was prone to a denial of service vulnerability. An attacker crafting a malicious zone and able to emit (or make emit) queries to the server can trick the resolver into following an endless series of delegations, leading to resource exhaustion and huge network usage.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected packages.

See Also

https://lists.debian.org/debian-lts-announce/2014/12/msg00010.html

https://packages.debian.org/source/squeeze-lts/unbound

Plugin Details

Severity: Medium

ID: 82091

File Name: debian_DLA-107.nasl

Version: 1.6

Type: local

Agent: unix

Published: 2015/03/26

Updated: 2020/03/12

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 3.6

CVSS v2.0

Base Score: 4.3

Temporal Score: 3.2

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libunbound-dev, p-cpe:/a:debian:debian_linux:libunbound2, p-cpe:/a:debian:debian_linux:unbound, p-cpe:/a:debian:debian_linux:unbound-host, cpe:/o:debian:debian_linux:6.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2014/12/12

Reference Information

CVE: CVE-2014-8602

BID: 71589