acpid 1.0.4 sets an unrestrictive umask, which might allow local users to leverage weak permissions on /var/log/acpid, and obtain sensitive information by reading this file or cause a denial of service by overwriting this file, a different vulnerability than CVE-2009-4033.

It was discovered that acpid, the Advanced Configuration and Power Interface event daemon, on the oldstable distribution (etch) creates its log file with weak permissions, which might expose sensitive information or might be abused by a local user to consume all free disk space on the same partition of the file.

An updated acpid package that fixes one security issue is now available for Red Hat Enterprise Linux 5.

This update has been rated as having important security impact by the Red Hat Security Response Team.

acpid is a daemon that dispatches ACPI (Advanced Configuration and Power Interface) events to user-space programs.

It was discovered that acpid could create its log file ('/var/log/acpid') with random permissions on some systems. A local attacker could use this flaw to escalate their privileges if the log file was created as world-writable and with the setuid or setgid bit set. (CVE-2009-4033)

Please note that this flaw was due to a Red Hat-specific patch (acpid-1.0.4-fd.patch) included in the Red Hat Enterprise Linux 5 acpid package.

Users are advised to upgrade to this updated package, which contains a backported patch to correct this issue.

A vulnerability has been found and corrected in acpid :

acpid 1.0.4 sets an unrestrictive umask, which might allow local users to leverage weak permissions on /var/log/acpid, and obtain sensitive information by reading this file or cause a denial of service by overwriting this file, a different vulnerability than CVE-2009-4033 (CVE-2009-4235).

Packages for 2008.0 are provided for Corporate Desktop 2008.0 customers.

This update provides a solution to this vulnerability.

ID	Name	Product	Family	Severity
44825	Debian DSA-1960-1 : acpid - programming error	Nessus	Debian Local Security Checks	medium
43810	CentOS 5 : acpid (CESA-2009:1642)	Nessus	CentOS Local Security Checks	medium
43605	Mandriva Linux Security Advisory : acpid (MDVSA-2009:343)	Nessus	Mandriva Local Security Checks	medium

Detections

Analytics

CVE-2009-4235

high

Tenable Plugins

medium

medium

medium