CVE-2017-8806

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-11-13 · updated 2026-06-17
Weakness: CWE-59

Description

The Debian pg_ctlcluster, pg_createcluster, and pg_upgradecluster scripts, as distributed in the Debian postgresql-common package before 181+deb9u1 for PostgreSQL (and other packages related to Debian and Ubuntu), handled symbolic links insecurely, which could result in local denial of service by overwriting arbitrary files.

Affected products

PostgreSQL: all versions

References

http://metadata.ftp-master.debian.org/changelogs/main/p/postgresql-common/postgresql-common_181+deb9u1_changelog
http://www.securityfocus.com/bid/101810
https://usn.ubuntu.com/usn/usn-3476-1/
https://www.debian.org/security/2017/dsa-4029
http://metadata.ftp-master.debian.org/changelogs/main/p/postgresql-common/postgresql-common_181+deb9u1_changelog
http://www.securityfocus.com/bid/101810
https://usn.ubuntu.com/usn/usn-3476-1/
https://www.debian.org/security/2017/dsa-4029

Get alerted when CVE-2017-8806 or the next vulnerability affects your stack