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Incorrect Permission Assignment for Critical Resource Affecting postgresql-9.5 package, versions <9.5.11-0ubuntu0.16.04

Severity

 Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.13% (34th percentile)

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  • Snyk IDSNYK-UBUNTU1604-POSTGRESQL95-274696
  • published9 Feb 2018
  • disclosed9 Feb 2018
Report a new vulnerability Found a mistake?

Introduced: 9 Feb 2018

CVE-2018-1053  (opens in a new tab)
CWE-732  (opens in a new tab)

How to fix?

Upgrade Ubuntu:16.04 postgresql-9.5 to version 9.5.11-0ubuntu0.16.04 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream postgresql-9.5 package and not the postgresql-9.5 package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

In postgresql 9.3.x before 9.3.21, 9.4.x before 9.4.16, 9.5.x before 9.5.11, 9.6.x before 9.6.7 and 10.x before 10.2, pg_upgrade creates file in current working directory containing the output of pg_dumpall -g under umask which was in effect when the user invoked pg_upgrade, and not under 0077 which is normally used for other temporary files. This can allow an authenticated attacker to read or modify the one file, which may contain encrypted or unencrypted database passwords. The attack is infeasible if a directory mode blocks the attacker searching the current working directory or if the prevailing umask blocks the attacker opening the file.