SB2017083118 - Amazon Linux AMI update for postgresql93, postgresql92
Published: August 31, 2017
Security Bulletin ID
SB2017083118
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2017-7547)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote authenticated attacker to obtain potentially sensitive information on the target system.
The weakness exists in the pg_user_mappings function due to insufficient security restrictions. A remote attacker can gain access to important data and conduct further attacks.
2) Authentication bypass (CVE-ID: CVE-2017-7546)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to bypass authentication on the target system.
The weakness exists in the systems using libpq or a libpq-based connection driver to perform password-based authentication methods due to insufficient security restrictions. A remote attacker can submit an empty password to disable password login and log in to the system.
Successful exploitation of the vulnerability may result in unauthorized access to the system and further attacks.
Remediation
Install update from vendor's website.