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RHEL 4 : bash (RHSA-2011:0261)
medium Nessus Plugin ID 52008
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Synopsis
The remote Red Hat host is missing a security update.Description
Updated bash packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 4.The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.
Bash (Bourne-again shell) is the default shell for Red Hat Enterprise Linux.
It was found that certain scripts bundled with the Bash documentation created temporary files in an insecure way. A malicious, local user could use this flaw to conduct a symbolic link attack, allowing them to overwrite the contents of arbitrary files accessible to the victim running the scripts. (CVE-2008-5374)
This update also fixes the following bugs :
* If a child process's PID was the same as the PID of a previously ended child process, Bash did not wait for that child process. In some cases this caused 'Resource temporarily unavailable' errors. With this update, Bash recycles PIDs and waits for processes with recycled PIDs.
(BZ#521134)
* Bash's built-in 'read' command had a memory leak when 'read' failed due to no input (pipe for stdin). With this update, the memory is correctly freed. (BZ#537029)
* Bash did not correctly check for a valid multi-byte string when setting the IFS value, causing Bash to crash. With this update, Bash checks the multi-byte string and no longer crashes. (BZ#539536)
* Bash incorrectly set locale settings when using the built-in 'export' command and setting the locale on the same line (for example, with 'LC_ALL=C export LC_ALL'). With this update, Bash correctly sets locale settings. (BZ#539538)
All bash users should upgrade to these updated packages, which contain backported patches to correct these issues.
Solution
Update the affected bash package.See Also
Plugin Details
Severity: Medium
ID: 52008
File Name: redhat-RHSA-2011-0261.nasl
Version: 1.18
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 2/17/2011
Updated: 1/14/2021
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 6.9
Temporal Score: 5.1
Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:bash, cpe:/o:redhat:enterprise_linux:4
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 2/16/2011
Vulnerability Publication Date: 12/8/2008
Reference Information
CVE: CVE-2008-5374
BID: 32733