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PostgreSQL class A vulnerability in contrib module: CVE-2017-12172

Severity CVSS Published Added Modified
7 (AV:L/AC:L/Au:N/C:C/I:C/A:C) November 09, 2017 November 09, 2017 January 28, 2018

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.

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References

Solution

postgres-upgrade-10_1

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