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PostgreSQL Privilege Escalation Vulnerability-Dec17 (Linux)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
This host is running PostgreSQL and is prone to a privilege escalation vulnerability.
Insight
Insight
The flaw exists as PostgreSQL runs under a non-root operating system account, and database superusers have effective ability to run arbitrary code under that system account. PostgreSQL provides a script for starting the database server during system boot. Packages of PostgreSQL for many operating systems provide their own, packager-authored startup implementations. Several implementations use a log file name that the database superuser can replace with a symbolic link. As root, they open(), chmod() and/or chown() this log file name. This often suffices for the database superuser to escalate to root privileges when root starts the server.
Affected Software
Affected Software
PostgreSQL version 9.2.x before 9.2.24, 9.3.x before 9.3.20, 9.4.x before 9.4.15, 9.5.x before 9.5.10, 9.6.x before 9.6.6 and 10.x before 10.1 on Linux.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Upgrade to PostgreSQL version 10.1 or 9.6.6 or 9.5.10 or 9.4.15 or 9.3.20 or 9.2.24 or later.