CVE-2017-8806

Name: CVE-2017-8806
Creator: NVD / NIST
Published: 2017-11-13T09:29:00.403+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.42%

Last modified Jun 17, 2026

CVE-2017-8806 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 0.42% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

0.42%

33.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-59

Affected Software

Vendor	Product	Versions
Postgresql	Postgresql	All versions

References

http://metadata.ftp-master.debian.org/changelogs/main/p/postgresql-common/postgresql-common_181+deb9u1_changelogBroken Link, Issue Tracking, Third Party Advisory
http://www.securityfocus.com/bid/101810Broken Link, Third Party Advisory, VDB Entry
https://usn.ubuntu.com/usn/usn-3476-1/Issue Tracking, Third Party Advisory
https://www.debian.org/security/2017/dsa-4029Issue Tracking, Third Party Advisory
http://metadata.ftp-master.debian.org/changelogs/main/p/postgresql-common/postgresql-common_181+deb9u1_changelogBroken Link, Issue Tracking, Third Party Advisory
http://www.securityfocus.com/bid/101810Broken Link, Third Party Advisory, VDB Entry
https://usn.ubuntu.com/usn/usn-3476-1/Issue Tracking, Third Party Advisory
https://www.debian.org/security/2017/dsa-4029Issue Tracking, Third Party Advisory

Timeline

Published: Nov 13, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-8806?

How severe is CVE-2017-8806?

CVE-2017-8806 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.

How do I fix CVE-2017-8806?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-8806?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST