CVE-2017-12172

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.

• CWE-59
• CWE-59

• http://www.securityfocus.com/bid/101949Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1039752Third Party Advisory, VDB Entry
• https://access.redhat.com/errata/RHSA-2017:3402Issue Tracking, Third Party Advisory
• https://access.redhat.com/errata/RHSA-2017:3403Issue Tracking, Third Party Advisory
• https://access.redhat.com/errata/RHSA-2017:3404Issue Tracking, Third Party Advisory
• https://access.redhat.com/errata/RHSA-2017:3405Issue Tracking, Third Party Advisory
• https://www.postgresql.org/about/news/1801/Issue Tracking, Vendor Advisory
• https://www.postgresql.org/support/security/Issue Tracking, Vendor Advisory
• http://www.securityfocus.com/bid/101949Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1039752Third Party Advisory, VDB Entry
• https://access.redhat.com/errata/RHSA-2017:3402Issue Tracking, Third Party Advisory
• https://access.redhat.com/errata/RHSA-2017:3403Issue Tracking, Third Party Advisory
• https://access.redhat.com/errata/RHSA-2017:3404Issue Tracking, Third Party Advisory
• https://access.redhat.com/errata/RHSA-2017:3405Issue Tracking, Third Party Advisory
• https://www.postgresql.org/about/news/1801/Issue Tracking, Vendor Advisory
• https://www.postgresql.org/support/security/Issue Tracking, Vendor Advisory

Published

Nov 22, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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