A recently discovered vulnerability, CVE-2022-33181, present in several versions of Brocade Fabric OS CLI (prior to Brocade Fabric OS v9.1., 9..1e, 8.2.3c, 8.2.cbn5, 7.4.2.j), can enable an authenticated local attacker to read sensitive files using specific switch commands. This information disclosure vulnerability has the potential to expose crucial system data, posing a significant risk to an organization's security.
This article will delve into the technical details of the vulnerability, the affected code snippets, the original references, and the exploitation steps, providing a comprehensive analysis of this security issue.
Vulnerability Details
The CVE-2022-33181 vulnerability affects the Brocade Fabric OS CLI, a command-line interface for managing Brocade devices. The vulnerability is caused by an insufficient access control mechanism, which allows authenticated local attackers to read sensitive files by using the "configshow" and "supportlink" switch commands.
Code Snippet
As an example, let's analyze a hypothetical exploit using the "configshow" command. An attacker with local access might execute the following command to retrieve sensitive information from the vulnerable system:
$ configshow -all
This command would provide the attacker with access to confidential data, including configuration settings and passwords.
Similarly, an attacker might use the "supportlink" command to access sensitive system data
$ supportlink -send -all
This command would send a support package containing sensitive system data, giving the attacker unauthorized access to critical information.
Original References
The following links can be used to obtain more information about CVE-2022-33181 and the discovered vulnerability:
1. CVE-2022-33181 - Official CVE Details
2. Brocade Fabric OS Vulnerability Advisory - Broadcom Security Advisory
Exploit Details
To exploit this vulnerability, an attacker would need to gain local access to the target system. Once local access has been acquired, the attacker can execute the "configshow" and "supportlink" commands, as demonstrated in the code snippet section above.
To mitigate the risk posed by CVE-2022-33181, affected users should consider updating the Brocade Fabric OS CLI to one of the following versions:
Brocade Fabric OS v7.4.2.j
These updated versions contain the necessary security fixes that address the vulnerabilities associated with CVE-2022-33181.
Conclusion
CVE-2022-33181 is an information disclosure vulnerability that poses a serious security risk to organizations using vulnerable versions of Brocade Fabric OS CLI. To safeguard sensitive information and prevent unauthorized access by local attackers, it is crucial to update the affected software to a patched version as mentioned earlier. By staying up-to-date with security updates, organizations can better protect their systems and ensure optimal security against potential threats.
Timeline
Published on: 10/25/2022 21:15:00 UTC
Last modified on: 03/02/2023 16:07:00 UTC