SB2019040834 - Input validation error in putty (Alpine package)
Published: April 8, 2019
Security Bulletin ID
SB2019040834
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-2019-9897)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
Multiple denial-of-service attacks that can be triggered by writing to the terminal exist in PuTTY versions before 0.71.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=5ff69c33184958f7cc0a18b0a80c819d82e9a49e
- https://git.alpinelinux.org/aports/commit/?id=8d25ad814b36930f39f2c7d760a90f54c3350720
- https://git.alpinelinux.org/aports/commit/?id=e29c5d734c6d64bd6709f1e9a9e3404ca37f2211
- https://git.alpinelinux.org/aports/commit/?id=e68f4defc683245fe34f4caa1ad6b6c64e5e6c23