SB2025121744 - Security restrictions bypass in Dropbear SSH client
Published: December 17, 2025
Security Bulletin ID
SB2025121744
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Security restrictions bypass (CVE-ID: CVE-2019-6111)
The vulnerability allows a remote attacker to bypass security restrictions on the target system.The weakness exists due to missing received object name validation by the scp client. A malicious SCP server can overwrite arbitrary files in the SCP client target directory. If a recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example overwrite .ssh/authorized_keys).
Remediation
Install update from vendor's website.