Resource exhaustion in Cisco Asr 5000 Series Software
CVE-2021-1378
A vulnerability in the SSH service of the Cisco StarOS operating system could allow an unauthenticated, remote attacker to cause an affected device to stop processing traffic, resulting in a denial of service (DoS) condition. The vulnerability is due to a logic error that may occur under specific traffic conditions. An attacker could exploit this vulnerability by sending a series of crafted packets to an affected device. A successful exploit could allow the attacker to prevent the targeted service from receiving any traffic, which would lead to a DoS condition on the affected device.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.015 (73.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-StarOS-D… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-1378?
- CVE-2021-1378 is a medium-severity vulnerability in Cisco Asr 5000 Series Software, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2021-02-17.
- How severe is CVE-2021-1378?
- Medium severity. CVSS v3 base score is 5.3 out of 10.