CVE-2016-5423: debian debian_linux NULL Pointer Dereference
Vulnerability summary
CVE-2016-5423 is a high (CVSS 8.3) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 5.96% chance of exploitation in the next 30 days, higher than 93.2% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 15 · Related 7Timeline
- 09-12-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.3HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
EPSS trend
Probability
5.96%
Chance of exploitation in the next 30 days
Percentile
93%
Versus all other CVEs
30-day change
0.00 pp
From 5.96% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu3 products
- postgresql-9.1< 9.1.23-0ubuntu0.14.04
- postgresql-9.3< 9.3.14-0ubuntu0.14.04
- postgresql-9.5< 9.5.4-0ubuntu0.16.04
Debian1 product
- debian_linuxEOL8.0
Postgresql1 product
- postgresqlEOL≤ 9.1.22 | 9.2 | 9.2.1 | 9.2.2 | 9.2.3 | 9.2.4 | 9.2.5 | 9.2.6 | 9.2.7 | 9.2.8 | 9.2.9 | 9.2.10 | 9.2.11 | 9.2.12 | 9.2.13 | 9.2.14 | 9.2.15 | 9.2.16 | 9.2.17 | 9.3 | 9.3.1 | 9.3.2 | 9.3.3 | 9.3.4 | 9.3.5 | 9.3.6 | 9.3.7 | 9.3.8 | 9.3.9 | 9.3.10 | 9.3.11 | 9.3.12 | 9.3.13 | 9.4 | 9.4.1 | 9.4.2 | 9.4.3 | 9.4.4 | 9.4.5 | 9.4.6 | 9.4.7 | 9.4.8 | 9.5 | 9.5.1 | 9.5.2 | 9.5.3
3 vendors · 5 products
References
19 links- www.postgresql.org/docs/current/static/release-9-4-9.htmlX Refsource CONFIRMRelease NotesVendor Advisory
- www.postgresql.org/docs/current/static/release-9-5-4.htmlX Refsource CONFIRMRelease NotesVendor Advisory
- www.postgresql.org/docs/current/static/release-9-3-14.htmlX Refsource CONFIRMRelease NotesVendor Advisory
Show all 19 references
- www.postgresql.org/docs/current/static/release-9-2-18.htmlX Refsource CONFIRMRelease NotesVendor Advisory
- www.postgresql.org/docs/current/static/release-9-1-23.htmlX Refsource CONFIRMRelease NotesVendor Advisory
- bugzilla.redhat.com/show_bug.cgi?id=1364001X Refsource CONFIRMIssue TrackingThird Party AdvisoryVDB Entry