SB2021090912 - Improper Neutralization of Argument Delimiters in a Command in Cisco IOS XR Software
Published: September 9, 2021
Security Bulletin ID
SB2021090912
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Neutralization of Argument Delimiters in a Command (CVE-ID: CVE-2021-34718)
The vulnerability allows a remote attacker to overwrite and read arbitrary files.
The vulnerability exists due to improper input validation in the SSH Server process. A remote authenticated attacker can specify Secure Copy Protocol (SCP) parameters when authenticating to a device and retrieve and upload files on a target device.
Remediation
Install update from vendor's website.