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.

See Also


Plugin Details

Severity: Medium

ID: 28093

File Name: ubuntu_USN-491-1.nasl

Version: 1.17

Type: local

Agent: unix

Published: 2007/11/10

Updated: 2019/08/02

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.3

Temporal Score: 3.4

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

Temporal Vector: CVSS2#E:POC/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: true

Exploit Ease: Exploits are available

Patch Publication Date: 2007/07/25

Reference Information

CVE: CVE-2007-2926

USN: 491-1