CVE-2021-34719 : Exploit Details and Defense Strategies
Learn about Cisco IOS XR Software authenticated user privilege escalation vulnerabilities with CVE-2021-34719. Find out the impact, affected systems, and mitigation steps.
Cisco IOS XR Software has been found to have authenticated user privilege escalation vulnerabilities, allowing a low-privileged local attacker to elevate their privileges on the affected device.
Understanding CVE-2021-34719
These vulnerabilities impact the CLI of Cisco IOS XR Software, posing a risk of privilege escalation to authenticated users.
What is CVE-2021-34719?
The CVE-2021-34719 CVE identifier is associated with multiple vulnerabilities in Cisco IOS XR Software that could be exploited by an authenticated local attacker to elevate their privileges on the affected device.
The Impact of CVE-2021-34719
The impact of CVE-2021-34719 is rated as high, with a base score of 7.8 (High severity) in the CVSS v3.1 metrics. The confidentiality, integrity, and availability of the affected systems are all rated as high.
Technical Details of CVE-2021-34719
The technical details of CVE-2021-34719 shed light on the vulnerability description, affected systems and versions, as well as the exploitation mechanism.
Vulnerability Description
These vulnerabilities in Cisco IOS XR Software allow a local attacker with low privileges to elevate their privileges on the device, posing a serious security risk.
Affected Systems and Versions
The affected product is Cisco IOS XR Software, with specific impacted versions listed as 'n/a'.
Exploitation Mechanism
An authenticated, local attacker can exploit these vulnerabilities in the CLI of Cisco IOS XR Software to escalate their privileges on the device.
Mitigation and Prevention
Mitigation steps and long-term security practices are crucial in addressing CVE-2021-34719 and ensuring the security of affected systems.
Immediate Steps to Take
Immediate actions involve reviewing and applying patches from the vendor, restricting access, and monitoring for any unusual activities on the affected device.
Long-Term Security Practices
In the long term, ensuring regular security updates, maintaining least privilege access policies, and conducting security awareness training can help prevent similar vulnerabilities.
Patching and Updates
Regularly monitoring vendor advisories and promptly applying security patches is essential to mitigate the risks associated with CVE-2021-34719.