SB2017071012 - Fedora 25 update for putty
Published: July 10, 2017 Updated: April 24, 2025
Security Bulletin ID
SB2017071012
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) Heap-based buffer overflow (CVE-ID: CVE-2017-6542)
The vulnerability allows a remote attacker to execute arbitrary code or cause DoS condition on the target system.The weakness exists due to heap-based buffer overflow bug in the ssh_agent_channel_data function of PuTTY. A remote attacker can send an agent protocol message containing large length value, connect to the Unix-domain socket representing the forwarded agent connection, trigger memory corruption and execute arbitrary code with privileges o the current user or cause the system to crash.
Successful exploitation of the vulnerability may result in system compromise.
Remediation
Install update from vendor's website.