SB2017081007 - Multiple vulnerabilities in PostgreSQL
Published: August 10, 2017 Updated: August 15, 2017
Security Bulletin ID
SB2017081007
Severity
Low
Patch available
YES
Number of vulnerabilities
3
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2017-7547)
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) Denial of service (CVE-ID: CVE-2017-7548)
The vulnerability allows a remote authenticated attacker to cause DoS condition on the target system.The weakness exists due to an access control flaw in the lo_put() function to change the data in a large object. A remote attacker can cause the application to crash.
3) Authentication bypass (CVE-ID: CVE-2017-7546)
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.