Improper access control in PostgreSQL - CVE-2017-12172

Vulnerability identifier: #VU9169

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-12172

CWE-ID: CWE-264

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local attacker to cause DoS condition or obtain potentially sensitive information on a targeted system.

The weakness exists due to a flaw in certain non-default startup scripts. A local attacker with the privileges of the database server can create a symbolic link from the $PGLOG file to a critical file and modify the target file.

PostgreSQL
Amazon Linux AMI
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux for Power
rh-postgresql94-postgresql (Red Hat package)
rh-postgresql95-postgresql (Red Hat package)
rh-postgresql96-postgresql (Red Hat package)

Update to version 9.6.6.

rh-postgresql94-postgresql (Red Hat package) - addressed in versions 9.4.14-2.el6, 9.4.14-2.el7
rh-postgresql95-postgresql (Red Hat package) - addressed in versions 9.5.9-4.el6, 9.5.9-4.el7
rh-postgresql96-postgresql (Red Hat package) - addressed in versions 9.6.5-2.el6, 9.6.5-2.el7

• https://www.postgresql.org/docs/current/static/release-9-6-6.html

• Multiple vulnerabilities in PostgreSQL
• Amazon Linux AMI update for postgresql95, postgresql96
• Amazon Linux AMI update for postgresql92, postgresql93, postgresql94
• Red Hat update for postgresql
• Red Hat Software Collections update for rh-postgresql94-postgresql
• Red Hat Software Collections update for rh-postgresql96-postgresql
• Red Hat Software Collections update for rh-postgresql95-postgresql