Ubuntu 4.10 / 5.04 / 5.10 : flex vulnerability (USN-260-1)

high Nessus Plugin ID 21072

Synopsis

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

Description

Chris Moore discovered a buffer overflow in a particular class of lexicographical scanners generated by flex. This could be exploited to execute arbitrary code by processing specially crafted user-defined input to an application that uses a flex scanner for parsing.

This flaw particularly affects gpc, the GNU Pascal Compiler. A potentially remote attacker could exploit this by tricking an user or automated system into compiling a specially crafted Pascal source code file.

Please note that gpc is not officially supported in Ubuntu (it is in the 'universe' component of the archive). However, this affects you if you use a customized version built from the gcc-3.3 or gcc-3.4 source package (which is supported).

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.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 21072

File Name: ubuntu_USN-260-1.nasl

Version: 1.17

Type: local

Agent: unix

Published: 3/13/2006

Updated: 1/19/2021

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.5

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libgcc1, p-cpe:/a:canonical:ubuntu_linux:libgcj-common, p-cpe:/a:canonical:ubuntu_linux:libgcj4, p-cpe:/a:canonical:ubuntu_linux:libgcj4-awt, p-cpe:/a:canonical:ubuntu_linux:libgcj4-common, p-cpe:/a:canonical:ubuntu_linux:libgcj4-dev, p-cpe:/a:canonical:ubuntu_linux:libgcj5, p-cpe:/a:canonical:ubuntu_linux:libgcj5-awt, p-cpe:/a:canonical:ubuntu_linux:libgcj5-common, p-cpe:/a:canonical:ubuntu_linux:libgcj5-dev, p-cpe:/a:canonical:ubuntu_linux:libgnat-3.4, p-cpe:/a:canonical:ubuntu_linux:libobjc1, p-cpe:/a:canonical:ubuntu_linux:libstdc%2b%2b5, p-cpe:/a:canonical:ubuntu_linux:libstdc%2b%2b5-3.3-dbg, p-cpe:/a:canonical:ubuntu_linux:libstdc%2b%2b5-3.3-dev, p-cpe:/a:canonical:ubuntu_linux:libstdc%2b%2b5-3.3-doc, p-cpe:/a:canonical:ubuntu_linux:cpp-3.3, p-cpe:/a:canonical:ubuntu_linux:cpp-3.3-doc, p-cpe:/a:canonical:ubuntu_linux:cpp-3.4, p-cpe:/a:canonical:ubuntu_linux:cpp-3.4-doc, p-cpe:/a:canonical:ubuntu_linux:fastjar, p-cpe:/a:canonical:ubuntu_linux:fixincludes, p-cpe:/a:canonical:ubuntu_linux:flex, p-cpe:/a:canonical:ubuntu_linux:flex-doc, p-cpe:/a:canonical:ubuntu_linux:g%2b%2b-3.3, p-cpe:/a:canonical:ubuntu_linux:g%2b%2b-3.4, p-cpe:/a:canonical:ubuntu_linux:g77-3.3, p-cpe:/a:canonical:ubuntu_linux:g77-3.3-doc, p-cpe:/a:canonical:ubuntu_linux:g77-3.4, p-cpe:/a:canonical:ubuntu_linux:g77-3.4-doc, p-cpe:/a:canonical:ubuntu_linux:gcc-3.3, p-cpe:/a:canonical:ubuntu_linux:gcc-3.3-base, p-cpe:/a:canonical:ubuntu_linux:gcc-3.3-doc, p-cpe:/a:canonical:ubuntu_linux:gcc-3.4, p-cpe:/a:canonical:ubuntu_linux:gcc-3.4-base, p-cpe:/a:canonical:ubuntu_linux:gcc-3.4-doc, p-cpe:/a:canonical:ubuntu_linux:gcj-3.3, p-cpe:/a:canonical:ubuntu_linux:gcj-3.4, p-cpe:/a:canonical:ubuntu_linux:gij-3.3, p-cpe:/a:canonical:ubuntu_linux:gij-3.4, p-cpe:/a:canonical:ubuntu_linux:gnat-3.3, p-cpe:/a:canonical:ubuntu_linux:gnat-3.3-doc, p-cpe:/a:canonical:ubuntu_linux:gnat-3.4, p-cpe:/a:canonical:ubuntu_linux:gnat-3.4-doc, p-cpe:/a:canonical:ubuntu_linux:gobjc-3.3, p-cpe:/a:canonical:ubuntu_linux:gobjc-3.4, p-cpe:/a:canonical:ubuntu_linux:gpc-2.1-3.3, p-cpe:/a:canonical:ubuntu_linux:gpc-2.1-3.3-doc, p-cpe:/a:canonical:ubuntu_linux:gpc-2.1-3.4, p-cpe:/a:canonical:ubuntu_linux:gpc-2.1-3.4-doc, p-cpe:/a:canonical:ubuntu_linux:lib32g2c0, p-cpe:/a:canonical:ubuntu_linux:lib32gcc1, p-cpe:/a:canonical:ubuntu_linux:lib32stdc%2b%2b5, p-cpe:/a:canonical:ubuntu_linux:lib32stdc%2b%2b6-0, p-cpe:/a:canonical:ubuntu_linux:lib64g2c0, p-cpe:/a:canonical:ubuntu_linux:lib64gcc1, p-cpe:/a:canonical:ubuntu_linux:lib64stdc%2b%2b6, p-cpe:/a:canonical:ubuntu_linux:libffi2, p-cpe:/a:canonical:ubuntu_linux:libffi2-dev, p-cpe:/a:canonical:ubuntu_linux:libffi3, p-cpe:/a:canonical:ubuntu_linux:libffi3-dev, p-cpe:/a:canonical:ubuntu_linux:libg2c0, p-cpe:/a:canonical:ubuntu_linux:libg2c0-dev, p-cpe:/a:canonical:ubuntu_linux:libstdc%2b%2b5-3.3-pic, p-cpe:/a:canonical:ubuntu_linux:libstdc%2b%2b6, p-cpe:/a:canonical:ubuntu_linux:libstdc%2b%2b6-0, p-cpe:/a:canonical:ubuntu_linux:libstdc%2b%2b6-0-dbg, p-cpe:/a:canonical:ubuntu_linux:libstdc%2b%2b6-0-dev, p-cpe:/a:canonical:ubuntu_linux:libstdc%2b%2b6-0-pic, p-cpe:/a:canonical:ubuntu_linux:libstdc%2b%2b6-dbg, p-cpe:/a:canonical:ubuntu_linux:libstdc%2b%2b6-dev, p-cpe:/a:canonical:ubuntu_linux:libstdc%2b%2b6-doc, p-cpe:/a:canonical:ubuntu_linux:libstdc%2b%2b6-pic, p-cpe:/a:canonical:ubuntu_linux:protoize, p-cpe:/a:canonical:ubuntu_linux:treelang-3.3, p-cpe:/a:canonical:ubuntu_linux:treelang-3.4, cpe:/o:canonical:ubuntu_linux:4.10, cpe:/o:canonical:ubuntu_linux:5.04, cpe:/o:canonical:ubuntu_linux:5.10

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/7/2006

Vulnerability Publication Date: 2/22/2006

Reference Information

CVE: CVE-2006-0459

CWE: 119

USN: 260-1