CVE-2005-1111

Race condition in cpio 2.6 and earlier allows local users to modify permissions of arbitrary files via a hard link attack on a file while it is being decompressed, whose permissions are changed by cpio after the decompression is complete.

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

Name	Vendor	Start Version	End Version
Cpio	Gnu	*	2.6 (including)
Red Hat Enterprise Linux 3	RedHat	cpio-0:2.5-4.RHEL3	*
Red Hat Enterprise Linux 4	RedHat	cpio-0:2.5-8.RHEL4	*
Red Hat Enterprise Linux AS (Advanced Server) version 2.1	RedHat		*
Red Hat Enterprise Linux ES version 2.1	RedHat		*
Red Hat Enterprise Linux WS version 2.1	RedHat		*
Red Hat Linux Advanced Workstation 2.1	RedHat		*
Cpio	Ubuntu	dapper	*
Cpio	Ubuntu	devel	*
Cpio	Ubuntu	edgy	*
Cpio	Ubuntu	feisty	*

Potential Mitigations

Follow the principle of least privilege when assigning access rights to entities in a software system.
Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

NVD	https://nvd.nist.gov/vuln/detail/CVE-2005-1111
CWE	https://cwe.mitre.org/data/definitions/59.html

Improper Link Resolution Before File Access ('Link Following')

Weakness

Affected Software

Potential Mitigations

References

CVE-2005-1111

Improper Link Resolution Before File Access ('Link Following')

Weakness

Affected Software

Potential Mitigations

Related Attack Patterns

References