SB2019120535 - Resource management error in putty (Alpine package)
Published: December 5, 2019
Security Bulletin ID
SB2019120535
Severity
Low
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) Resource management error (CVE-ID: CVE-2019-17069)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an error when processing SSH1_MSG_DISCONNECT message. A remote attacker can trick the victim to connect to a remote SSH-1 server, send a specially crafted SSH1_MSG_DISCONNECT message and crash the affected PuTTY client.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=25b4361bdc9f4c39a1e66d492117f90e6701832b
- https://git.alpinelinux.org/aports/commit/?id=8d7092356e7b101ff1c39be6009da6297e5aa418
- https://git.alpinelinux.org/aports/commit/?id=cee3cd28a75386eb0461f2355237396c014c6a8e
- https://git.alpinelinux.org/aports/commit/?id=d21e62f341aa3be70aa5dc967aeebdf6a54e04d2