SB2019080721 - Red Hat update for libssh2
Published: August 7, 2019 Updated: August 8, 2019
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2019-3858)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition when processing SFTP packets. A remote attacker can trick the victim to connect to a malicious SSH server, trigger out-of-bounds read error and read contents of memory or crash the affected application.
2) Out-of-bounds read (CVE-ID: CVE-2019-3861)
The vulnerability allows a remote attacker to gain access to potentially sensitive information or perform denial of service (DoS) attack.
The vulnerability exists due to a boundary condition when SSH packets with a padding length value greater than the packet length are parsed. A remote attacker can trick the victim to connect to a malicious SSH server, trigger out of bounds read and gain access to sensitive information or perform denial of service attack.
Remediation
Install update from vendor's website.