SB2015111013 - Fedora 23 update for putty
Published: November 10, 2015 Updated: April 24, 2025
Security Bulletin ID
SB2015111013
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2015-5309)
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.
Remediation
Install update from vendor's website.