Scientific Linux Security Update : tcl on SL5.x i386/x86_64 (20130108)

medium Nessus Plugin ID 63605
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote Scientific Linux host is missing one or more security updates.

Description

Two denial of service flaws were found in the Tcl regular expression handling engine. If Tcl or an application using Tcl processed a specially crafted regular expression, it would lead to excessive CPU and memory consumption. (CVE-2007-4772, CVE-2007-6067)

This update also fixes the following bug :

- Due to a suboptimal implementation of threading in the current version of the Tcl language interpreter, an attempt to use threads in combination with fork in a Tcl script could cause the script to stop responding. At the moment, it is not possible to rewrite the source code or drop support for threading entirely. Consequent to this, this update provides a version of Tcl without threading support in addition to the standard version with this support. Users who need to use fork in their Tcl scripts and do not require threading can now switch to the version without threading support by using the alternatives command.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?66ed624f

Plugin Details

Severity: Medium

ID: 63605

File Name: sl_20130108_tcl_on_SL5_x.nasl

Version: 1.7

Type: local

Agent: unix

Published: 1/17/2013

Updated: 1/14/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Vector: AV:N/AC:L/Au:S/C:N/I:N/A:C

Vulnerability Information

CPE: p-cpe:/a:fermilab:scientific_linux:tcl, p-cpe:/a:fermilab:scientific_linux:tcl-debuginfo, p-cpe:/a:fermilab:scientific_linux:tcl-devel, p-cpe:/a:fermilab:scientific_linux:tcl-html, x-cpe:/o:fermilab:scientific_linux

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 1/8/2013

Vulnerability Publication Date: 1/9/2008

Reference Information

CVE: CVE-2007-4772, CVE-2007-6067

CWE: 189, 399