CVE-2010-4347

The ACPI subsystem in the Linux kernel before 2.6.36.2 uses 0222 permissions for the debugfs custom_method file, which allows local users to gain privileges by placing a custom ACPI method in the ACPI interpreter tables, related to the acpi_debugfs_init function in drivers/acpi/debugfs.c.

Weakness

The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Affected Software

Potential Mitigations

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/122.html
• https://cwe.mitre.org/data/definitions/233.html
• https://cwe.mitre.org/data/definitions/58.html

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ed3aada1bf34c5a9e98af167f125f8a740fc726a
• http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00000.html
• http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
• http://openwall.com/lists/oss-security/2010/12/15/3
• http://openwall.com/lists/oss-security/2010/12/15/7
• http://secunia.com/advisories/42778
• http://www.exploit-db.com/exploits/15774/
• http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36.2
• http://www.securityfocus.com/bid/45408
• http://www.vupen.com/english/advisories/2011/0012
• http://www.vupen.com/english/advisories/2011/0298
• https://bugzilla.redhat.com/show_bug.cgi?id=663542
• https://exchange.xforce.ibmcloud.com/vulnerabilities/64155