Red Hat Linux 6.0/6.1/6.2 PAM Module pam_console privileges management

Summaryinfo

A vulnerability categorized as problematic has been discovered in Red Hat Linux 6.0/6.1/6.2. Affected is an unknown function of the file pam_console of the component PAM Module. Executing a manipulation can lead to privileges management. This vulnerability is registered as CVE-2000-0378. Furthermore, an exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Red Hat Linux 6.0/6.1/6.2 (Operating System) and classified as critical. This vulnerability affects an unknown functionality of the file pam_console of the component PAM Module. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The pam_console PAM module in Linux systems performs a chown on various devices upon a user login, but an open file descriptor for those devices can be maintained after the user logs out, which allows that user to sniff activity on these devices when subsequent users log in.

The issue has been introduced in 04/26/1999. The weakness was published 05/03/2000 by Michal Zalewski (Website). The advisory is shared for download at archives.neohapsis.com. This vulnerability was named CVE-2000-0378. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1068.

A public exploit has been developed in ANSI C. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 373 days. During that time the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (19900) and SecurityFocus (BID 1176†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Operating System

Vendor

• Red Hat

Name

• Linux

Version

• 6.0
• 6.1
• 6.2

License

• open-source

Website

• Vendor: https://www.redhat.com/

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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