SB2023092914 - Remote code execution in Cisco IOS and IOS XE Software Cisco Group Encrypted Transport VPN Software
Published: September 29, 2023
Security Bulletin ID
SB2023092914
Severity
High
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) Out-of-bounds write (CVE-ID: CVE-2023-20109)
The vulnerability allows a remote user to compromise vulnerable system.
The vulnerability exists due to insufficient validation of attributes in the Group Domain of Interpretation (GDOI) and G-IKEv2 protocols within the Cisco Group Encrypted Transport VPN (GET VPN) feature. A remote authenticated user with administrative control of either a group member or a key server can trigger an out-of-bounds write and execute arbitrary code on the target system.
Note, the vulnerability has been exploited in the wild.
Remediation
Install update from vendor's website.