CVE-2024-20312
HIGHDescription
A vulnerability in the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation when parsing an ingress IS-IS packet. An attacker could exploit this vulnerability by sending a crafted IS-IS packet to an affected device after forming an adjacency. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. Note: The IS-IS protocol is a routing protocol. To exploit this vulnerability, an attacker must be Layer 2-adjacent to the affected device and have formed an adjacency.
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CVSS v3.1 Score
7.4
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Weakness Type (CWE)
CWE-476
CWE-476
Affected Products
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| cisco | ios_xe |
| cisco | ios_xe |
| cisco | ios_xe |
| cisco | ios_xe |
| cisco | ios_xe |
| cisco | ios_xe |
| cisco | ios_xe |
| cisco | ios_xe |
| cisco | ios_xe |
| cisco | ios_xe |
| cisco | ios_xe |
| cisco | ios_xe |
| cisco | ios_xe |
| cisco | ios_xe |
| cisco | ios_xe |
| cisco | ios_xe |
| cisco | ios_xe |
| cisco | ios_xe |
| cisco | ios_xe |
References
Frequently Asked Questions
What is CVE-2024-20312? +
A vulnerability in the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to insufficient input validation when parsing an ingress IS-IS packet. An attacker could exploit this vulnerability by sending a crafted IS-IS packet to an affected device after forming an adjacency. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.
Note: The IS-IS protocol is a routing protocol. To exploit this vulnerability, an attacker must be Layer 2-adjacent to the affected device and have formed an adjacency. It has a CVSS v3.1 base score of 7.4 (HIGH).
How severe is CVE-2024-20312? +
CVE-2024-20312 has a CVSS v3.1 score of 7.4 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2024-20312? +
CVE-2024-20312 affects products from cisco, specifically: ios, ios_xe. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-20312? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.
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