Cisco IOS 11.2 Filter privileges management

Summaryinfo

A vulnerability has been found in Cisco IOS 11.2 and classified as critical. Affected by this issue is some unknown functionality of the component Filter Handler. The manipulation leads to privileges management. This vulnerability is listed as CVE-1999-0162. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Cisco IOS 11.2 (Router Operating System). This issue affects an unknown part of the component Filter Handler. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality. The summary by CVE is:

The "established" keyword in some Cisco IOS software allowed an attacker to bypass filtering.

The weakness was presented 09/01/1998. The identification of this vulnerability is CVE-1999-0162. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 10973 (Cisco IOS established Keyword ACL Bypass (CSCdi34061)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO, running in the context l and relying on port 161. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43079 (Cisco IOS "Established" Keyword ACL Bypass Vulnerability).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (10973) and Vulnerability Center (SBV-2058†). See VDB-13653 for similar entry. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Router Operating System

Vendor

• Cisco

Name

• IOS

Version

• 11.2

License

• commercial

Website

• Vendor: https://www.cisco.com/

CPE 2.3info

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CPE 2.2info

• 🔍

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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