Ubuntu 6.06 LTS / 6.10 / 7.04 : bind9 vulnerability (USN-491-1)

Medium Nessus Plugin ID 28093


The remote Ubuntu host is missing one or more security-related patches.


A flaw was discovered in Bind's sequence number generator. A remote attacker could calculate future sequence numbers and send forged DNS query responses. This could lead to client connections being directed to attacker-controlled hosts, resulting in credential theft and other attacks.

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


Update the affected packages.

Plugin Details

Severity: Medium

ID: 28093

File Name: ubuntu_USN-491-1.nasl

Version: $Revision: 1.14 $

Type: local

Agent: unix

Published: 2007/11/10

Modified: 2016/05/27

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 4.3

Temporal Score: 3.7

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:bind9, p-cpe:/a:canonical:ubuntu_linux:bind9-doc, p-cpe:/a:canonical:ubuntu_linux:bind9-host, p-cpe:/a:canonical:ubuntu_linux:dnsutils, p-cpe:/a:canonical:ubuntu_linux:libbind-dev, p-cpe:/a:canonical:ubuntu_linux:libbind9-0, p-cpe:/a:canonical:ubuntu_linux:libdns21, p-cpe:/a:canonical:ubuntu_linux:libdns22, p-cpe:/a:canonical:ubuntu_linux:libisc11, p-cpe:/a:canonical:ubuntu_linux:libisccc0, p-cpe:/a:canonical:ubuntu_linux:libisccfg1, p-cpe:/a:canonical:ubuntu_linux:liblwres9, p-cpe:/a:canonical:ubuntu_linux:lwresd, cpe:/o:canonical:ubuntu_linux:6.06:-:lts, cpe:/o:canonical:ubuntu_linux:6.10, cpe:/o:canonical:ubuntu_linux:7.04

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2007/07/25

Vulnerability Publication Date: 2007/07/24

Reference Information

CVE: CVE-2007-2926

OSVDB: 36235

USN: 491-1