Summaryinfo

A vulnerability was found in Red Hat Linux up to 6.1. It has been classified as problematic. This affects an unknown part of the component usermode. The manipulation leads to path traversal. This vulnerability is uniquely identified as CVE-2000-0052. Furthermore, there is an exploit available. It is recommended to upgrade the affected component. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Detailsinfo

A vulnerability was found in Red Hat Linux up to 6.1 (Operating System) and classified as critical. Affected by this issue is some unknown processing of the component usermode. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Red Hat userhelper program in the usermode package allows local users to gain root access via PAM and a .. (dot dot) attack.

The weakness was shared 01/04/2000 with L0pht (Website). The advisory is shared for download at xforce.iss.net. This vulnerability is handled as CVE-2000-0052. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

A public exploit has been developed in Shell File. The exploit is available at securityfocus.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (19709) and SecurityFocus (BID 913†). The entry VDB-15220 is related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Operating System

Vendor

• Red Hat

Name

• Linux

Version

• 3.5b2
• 4.2
• 4.4
• 6.0
• 6.0.2
• 6.1

License

• open-source

CPE 2.3info

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CPE 2.2info

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