Ubuntu 5.04 / 5.10 : libnasl vulnerability (USN-279-1)

Low Nessus Plugin ID 21373


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


Jayesh KS discovered that the nasl_split() function in the NASL (Nessus Attack Scripting Language) library did not check for a zero-length separator argument, which lead to an invalid memory allocation. This library is primarily used in the Nessus security scanner; a remote attacker could exploit this vulnerability to cause the Nessus daemon to crash.

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 libnasl-dev and / or libnasl2 packages.

Plugin Details

Severity: Low

ID: 21373

File Name: ubuntu_USN-279-1.nasl

Version: $Revision: 1.11 $

Type: local

Agent: unix

Published: 2006/05/13

Modified: 2017/02/23

Dependencies: 12634

Risk Information

Risk Factor: Low


Base Score: 2.6

Temporal Score: 2.1

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libnasl-dev, p-cpe:/a:canonical:ubuntu_linux:libnasl2, cpe:/o:canonical:ubuntu_linux:5.04, cpe:/o:canonical:ubuntu_linux:5.10

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: 2006/05/03

Vulnerability Publication Date: 2006/04/26

Reference Information

CVE: CVE-2006-2093

OSVDB: 25084

USN: 279-1