CVE-2018-1053 Information
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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.
CVSS Vector
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Reference
http://www.securityfocus.com/bid/102986 https://access.redhat.com/errata/RHSA-2018:2511 https://access.redhat.com/errata/RHSA-2018:2566 https://access.redhat.com/errata/RHSA-2018:3816 https://lists.debian.org/debian-lts-announce/2018/02/msg00006.html https://usn.ubuntu.com/3564-1/ https://www.postgresql.org/about/news/1829/
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction Required
LOW
Scope
NONE
Confidentiality Impact
UNCHANGED
Integrity Impact
HIGH
Availability Impact
HIGH
Base Score
HIGH
Base Severity
7.0