CVE-2001-1494

script command in the util-linux package before 2.11n allows local users to overwrite arbitrary files by setting a hardlink from the typescript log file to any file on the system, then having root execute the script command.

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

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.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/132.html
• https://cwe.mitre.org/data/definitions/17.html
• https://cwe.mitre.org/data/definitions/35.html
• https://cwe.mitre.org/data/definitions/76.html

References

• http://seclists.org/bugtraq/2001/Dec/0122.html
• http://seclists.org/bugtraq/2001/Dec/0123.html
• http://secunia.com/advisories/16785
• http://secunia.com/advisories/18502
• http://support.avaya.com/elmodocs2/security/ASA-2006-014.htm
• http://www.redhat.com/support/errata/RHSA-2005-782.html
• http://www.securityfocus.com/bid/16280
• https://exchange.xforce.ibmcloud.com/vulnerabilities/7718
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10723
• http://seclists.org/bugtraq/2001/Dec/0122.html
• http://seclists.org/bugtraq/2001/Dec/0123.html
• http://secunia.com/advisories/16785
• http://secunia.com/advisories/18502
• http://support.avaya.com/elmodocs2/security/ASA-2006-014.htm
• http://www.redhat.com/support/errata/RHSA-2005-782.html
• http://www.securityfocus.com/bid/16280
• https://exchange.xforce.ibmcloud.com/vulnerabilities/7718
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10723