Vulnerability in Cisco Ios Xe Software
CVE-2021-34697
A vulnerability in the Protection Against Distributed Denial of Service Attacks feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to conduct denial of service (DoS) attacks to or through the affected device. This vulnerability is due to incorrect programming of the half-opened connections limit, TCP SYN flood limit, or TCP SYN cookie features when the features are configured in vulnerable releases of Cisco IOS XE Software. An attacker could exploit this vulnerability by attempting to flood traffic to or through the affected device. A successful exploit could allow the attacker to initiate a DoS attack to or through an affected device.
Vulnerability class: Dirty Pipe (CVE-2022-0847)
EPSS: 0.013 (68.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L.
Affected products
- Cisco Ios Xe Software — versions n/a
- Cisco Ios_xe
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-34697?
- CVE-2021-34697 is a medium-severity vulnerability in Cisco Ios Xe Software, classified under Improper Initialization. CVSS score: 5.8/10. Published 2021-09-23.
- How severe is CVE-2021-34697?
- Medium severity. CVSS v3 base score is 5.8 out of 10.