SB2022091508 - Denial of service in Cisco IOS XR Software
Published: September 15, 2022
Security Bulletin ID
SB2022091508
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2022-20849)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the affected application does not properly handle an error condition in the Broadband Network Gateway PPP over Ethernet (PPPoE) feature. A remote attacker on the local network can pass specially crafted input to the application and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.