CVE-2021-1313 : Security Advisory and Response
Multiple vulnerabilities in Cisco IOS XR Software's ingress packet processing function have high-severity impact, enabling a remote attacker to trigger denial of service. Learn about the technical details, affected systems, exploitation mechanism, and mitigation steps for CVE-2021-1313.
Cisco IOS XR Software is prone to multiple vulnerabilities in the ingress packet processing function that could allow a remote attacker to trigger a denial of service (DoS) condition on an affected device. The base score for this vulnerability is 8.6, categorizing it as high severity.
Understanding CVE-2021-1313
This CVE refers to the vulnerability found in Cisco IOS XR Software's Enf Broker, posing a risk of DoS attacks on impacted devices.
What is CVE-2021-1313?
The CVE-2021-1313 vulnerability exists in the ingress packet processing function of Cisco IOS XR Software, enabling an unauthenticated attacker to launch a DoS attack on affected systems.
The Impact of CVE-2021-1313
With a base score of 8.6, this high-severity vulnerability could lead to a complete denial of service on devices running the affected software, potentially disrupting essential services.
Technical Details of CVE-2021-1313
The following are the key technical details associated with CVE-2021-1313:
Vulnerability Description
The vulnerability allows remote attackers to cause a DoS condition by exploiting the ingress packet processing function of Cisco IOS XR Software.
Affected Systems and Versions
Cisco IOS XR Software versions are affected by this vulnerability. The details of the affected version are not available at the moment.
Exploitation Mechanism
The attack complexity for this vulnerability is rated as low, with a network attack vector. The availability impact of an exploit is high, making it crucial to address promptly.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-1313, consider the following actions:
Immediate Steps to Take
- Implement network security controls to restrict unauthorized access.
- Monitor network traffic for any anomalies that could indicate an ongoing attack.
Long-Term Security Practices
- Regularly update and patch Cisco IOS XR Software to incorporate security fixes.
- Conduct routine security assessments and audits to identify and address any vulnerabilities proactively.
- Stay informed about security advisories and subscribe to relevant channels for timely updates.
Patching and Updates
Refer to the Cisco advisory for CVE-2021-1313 for detailed guidance on patches and updates to remediate this vulnerability.