SB2022082440 - Denial of service in Cisco NX-OS Software OSPFv3
Published: August 24, 2022
Security Bulletin ID
SB2022082440
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2022-20823)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition when processing OSPFv3 packets. A remote attacker can send specially crafted OSPFv3 link-state advertisement (LSA) packets to an affected device, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ospfv3-dos-48qutcu
- https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvz68748
- https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwb50012
- https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwb50013
- https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwb50015