NULL pointer dereference in PostgreSQL
CVE-2016-5423
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H.
EPSS exploit prediction
EPSS: 0.060 (93.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.060 · newest: 0.060 · change: 0.000
Affected products
- PostgreSQL — versions 9.2, 9.2.1, 9.2.2
- Debian Linux — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- rhn.redhat.com/errata/RHSA-2016-1781.html (vendor-advisory)
- www.postgresql.org/docs/current/static/release-9-4-9.html (Release Notes, Vendor Advisory)
- www.securitytracker.com/id/1036617 (VDB Entry, Third Party Advisory, vdb-entry)
- rhn.redhat.com/errata/RHSA-2016-1821.html (vendor-advisory)
- www.debian.org/security/2016/dsa-3646 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/92433 (VDB Entry, Third Party Advisory, vdb-entry)
- security.gentoo.org/glsa/201701-33 (vendor-advisory)
- access.redhat.com/errata/RHSA-2017:2425 (vendor-advisory)
- www.postgresql.org/docs/current/static/release-9-5-4.html (Release Notes, Vendor Advisory)
- www.postgresql.org/docs/current/static/release-9-3-14.html (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2016-5423?
- CVE-2016-5423 is a high-severity vulnerability in PostgreSQL, classified under NULL Pointer Dereference. CVSS score: 8.3/10. Published 2016-12-09.
- How severe is CVE-2016-5423?
- High severity. CVSS v3 base score is 8.3 out of 10.
- Is CVE-2016-5423 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.