SB2021041901 - Security restrictions bypass in OpenSSH
Published: April 19, 2021
Security Bulletin ID
SB2021041901
Severity
Low
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) Security restrictions bypass (CVE-ID: N/A)
The vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions, when LogVerbose keyword option is enabled with a set of options that activated logging for the low-privileged sandboxed sshd process. A remote user who can exploit the low-privileged process can escape the OpenSSH sendboxing and attack the high-level processes.
Successful exploitation of this vulnerability requires presence of security issue in the low-level process.
Remediation
Install update from vendor's website.