NULL pointer dereference in graphviz - CVE-2019-11023

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Main Vulnerability Database Vulnerabilities #VU18637

NULL pointer dereference in graphviz - CVE-2019-11023

Published: May 29, 2019


Vulnerability identifier: #VU18637
CSH Severity: Low
CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-11023
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dreference error in the agroot() function within cgraphobj.c of the libcgraph.a. A remote attacker can pass specially crafted GraphML input to the affected application and perform a denial of service (DoS) attack.


Affected software

graphviz
Amazon Linux AMI
Ubuntu
Opensuse
Fedora
graphviz (Ubuntu package)
libcdt5 (Ubuntu package)
libxdot4 (Ubuntu package)
libpathplan4 (Ubuntu package)
libgvpr2 (Ubuntu package)
libgvc6-plugins-gtk (Ubuntu package)
libgvc6 (Ubuntu package)
libcgraph6 (Ubuntu package)
graphviz
Isolation Segment
VMware Tanzu Application Service for VMs

How to mitigate CVE-2019-11023

Install update from vendor's website.

graphviz (Ubuntu package) - addressed in versions Ubuntu Pro, 2.38.012ubuntu2.1+esm1
Isolation Segment - addressed in versions 2.11.36, 2.13.21, 3.0.14, 4.0.5
VMware Tanzu Application Service for VMs - addressed in versions 2.11.42, 2.13.24, 3.0.14, 4.0.5
libcdt5 (Ubuntu package) - update to 2.38.012ubuntu2.1+esm1
libxdot4 (Ubuntu package) - update to 2.38.012ubuntu2.1+esm1
libpathplan4 (Ubuntu package) - update to 2.38.012ubuntu2.1+esm1
libgvpr2 (Ubuntu package) - update to 2.38.012ubuntu2.1+esm1
libgvc6-plugins-gtk (Ubuntu package) - update to 2.38.012ubuntu2.1+esm1
libgvc6 (Ubuntu package) - update to 2.38.012ubuntu2.1+esm1
libcgraph6 (Ubuntu package) - update to 2.38.012ubuntu2.1+esm1
graphviz - addressed in versions 2.40.1-39.fc29, 2.40.1-45.fc30, 2.40.1-46.fc30

External References

Related Security Bulletins