Resource exhaustion in Cisco Nx-Os Software
CVE-2024-20321
A vulnerability in the External Border Gateway Protocol (eBGP) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because eBGP traffic is mapped to a shared hardware rate-limiter queue. An attacker could exploit this vulnerability by sending large amounts of network traffic with certain characteristics through an affected device. A successful exploit could allow the attacker to cause eBGP neighbor sessions to be dropped, leading to a DoS condition in the network.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (52.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Cisco Nx-Os Software — versions 7.0(3)F1(1), 7.0(3)F2(1), 7.0(3)F2(2)
- Cisco Nx-Os — versions 10.2(3), 7.0(3)f3(5), 9.3\(7\)
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2024-20321?
- CVE-2024-20321 is a high-severity vulnerability in Cisco Nx-Os Software, classified under Uncontrolled Resource Consumption. CVSS score: 8.6/10. Published 2024-02-29.
- How severe is CVE-2024-20321?
- High severity. CVSS v3 base score is 8.6 out of 10.