CVE-2016-5423

Description

PostgreSQL before 9.1.23, 9.2.x before 9.2.18, 9.3.x before 9.3.14, 9.4.x before 9.4.9, and 9.5.x before 9.5.4 allow remote authenticated users to cause a denial of service (NULL pointer dereference and server crash), obtain sensitive memory information, or possibly execute arbitrary code via (1) a CASE expression within the test value subexpression of another CASE or (2) inlining of an SQL function that implements the equality operator used for a CASE expression involving values of different types.

Category

8.3
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 3.40% Top 15%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory gentoo.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory postgresql.org Vendor Advisory postgresql.org Vendor Advisory postgresql.org Vendor Advisory postgresql.org Vendor Advisory postgresql.org Vendor Advisory postgresql.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://rhn.redhat.com/errata/RHSA-2016-1781.html vendor advisory
https://www.postgresql.org/docs/current/static/release-9-4-9.html release notes vendor advisory
http://www.securitytracker.com/id/1036617 vdb entry third party advisory
http://rhn.redhat.com/errata/RHSA-2016-1821.html vendor advisory
http://www.debian.org/security/2016/dsa-3646 third party advisory vendor advisory
http://www.securityfocus.com/bid/92433 vdb entry third party advisory
https://security.gentoo.org/glsa/201701-33 vendor advisory
https://access.redhat.com/errata/RHSA-2017:2425 vendor advisory
https://www.postgresql.org/docs/current/static/release-9-5-4.html release notes vendor advisory
https://www.postgresql.org/docs/current/static/release-9-3-14.html release notes vendor advisory
https://www.postgresql.org/about/news/1688/ patch vendor advisory
https://www.postgresql.org/docs/current/static/release-9-2-18.html release notes vendor advisory
http://rhn.redhat.com/errata/RHSA-2016-2606.html vendor advisory
http://rhn.redhat.com/errata/RHSA-2016-1820.html vendor advisory
https://www.postgresql.org/docs/current/static/release-9-1-23.html release notes vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1364001 issue tracking vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2016-5423?
CVE-2016-5423 has been scored as a high severity vulnerability.
How to fix CVE-2016-5423?
To fix CVE-2016-5423, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-5423 being actively exploited in the wild?
It is possible that CVE-2016-5423 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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