CWE Code: 59
Vulnerability Type: privilege_escalation
CVSS Score: 7.2
CWE Name:  Improper Link Resolution Before File Access ('Link Following')
Summary: postgresql 10.x before 10.1, 9.6.x before 9.6.6, 9.5.x before 9.5.10, 9.4.x before 9.4.15, 9.3.x before 9.3.20, and 9.2.x before 9.2.24 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.
Access Authentication: NONE
Access Complexity: LOW
Access Vector: LOCAL
Impact (C/I/A): COMPLETE/COMPLETE/COMPLETE
Published Date: 2017-11-22
Last Modified Date: 2019-10-09