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PostgreSQL: CVE-2017-12172: Start scripts permit database administrator to modify root-owned files

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PostgreSQL: CVE-2017-12172: Start scripts permit database administrator to modify root-owned files

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
11/10/2017
Created
07/25/2018
Added
11/10/2017
Modified
11/26/2021

Description

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.

Solution(s)

  • postgres-upgrade-10_1

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