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Fencer Vulns
high 8.8

CVE-2019-11023 json

The agroot() function in cgraph\obj.c in libcgraph.a in Graphviz 2.39.20160612.1140 has a NULL pointer dereference, as demonstrated by grap…

published 2019-04-08 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-2732

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.9%
EPSS 4.9% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

The agroot() function in cgraph\obj.c in libcgraph.a in Graphviz 2.39.20160612.1140 has a NULL pointer dereference, as demonstrated by graphml2gv.

Patch / fix

  • graphviz Ubuntu Pro 14.04 LTS 2.36.0-0ubuntu3.2+esm1
  • graphviz Ubuntu Pro 16.04 LTS 2.38.0-12ubuntu2.1+esm1
  • graphviz Ubuntu Pro 18.04 LTS 2.40.1-2ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2019-11023

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • graphviz SLE Module for Basesystem 15 SP2, SLE Module for Basesystem 15 SP1, SLE Module for Basesystem 15 2.40.1-6.3.2
  • graphviz-addons SLE Module for Server Applications 15 SP2, SLE Module for Server Applications 15 SP1, SLE Module for Server Applications 15 +9 more 2.40.1-6.3.2

suse advisories SUSE-SU-2019:1267-3SUSE-SU-2019:1267-2SUSE-SU-2019:1267-1

  • graphviz openSUSE Tumbleweed 2.48.0-4.2
  • graphviz openSUSE Leap 15.2 2.40.1-lp152.7.4.2
  • graphviz-addons openSUSE Leap 15.2 2.40.1-lp152.7.4.2
  • graphviz openSUSE Leap 15.2 2.40.1-lp152.7.2.1
  • graphviz-addons openSUSE Leap 15.2 2.40.1-lp152.7.3.1
  • graphviz openSUSE Leap 15.0 2.40.1-lp150.5.3.1
  • graphviz-addons openSUSE Leap 15.0 2.40.1-lp150.5.3.1
  • graphviz openSUSE Leap 15.1 2.40.1-lp151.6.3.1

opensuse advisories openSUSE-SU-2024:10821-1openSUSE-SU-2020:0906-1openSUSE-SU-2020:0876-1openSUSE-SU-2019:1459-1openSUSE-SU-2019:1434-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-11023 updated cvss 3.3

graphviz: null pointer dereference in function agroot() in cgraph\obj.c

  • Red Hat Enterprise Linux 7 graphviz, graphviz-gd, graphviz-lua, graphviz-php, graphviz-tcl, graphviz-java, +6 more
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 8 graphviz, graphviz-gd, graphviz-python3
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux 6 graphviz, graphviz-gd, graphviz-lua, graphviz-php, graphviz-tcl, graphviz-java, +5 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.89% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • gitlab.com https://gitlab.com/graphviz/graphviz/issues/1517 referenced PoC, tagged "exploit" by a source, unverified
  • research.loginsoft.com https://research.loginsoft.com/bugs/null-pointer-dereference-in-function-agroot/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.