SB2021082614 - Denial of service in Cisco NX-OS Software
Published: August 26, 2021
Security Bulletin ID
SB2021082614
CSH 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 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2021-1588)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition in the MPLS Operation, Administration, and Maintenance (OAM) feature. A remote attacker can send a specially crafted MPLS echo-request or echo-reply packet, trigger out-of-bounds read error and cause a denial of service condition on the system.
Remediation
Install update from vendor's website.