CVE-2019-11023 : Security Advisory and Response
Learn about CVE-2019-11023, a NULL pointer dereference vulnerability in the agroot() function within Graphviz. Find out the impact, affected systems, and mitigation steps.
A NULL pointer dereference vulnerability was discovered in the agroot() function within the libcgraph.a library of Graphviz version 2.39.20160612.1140. This vulnerability has been exploited through graphml2gv usage.
Understanding CVE-2019-11023
This CVE involves a specific vulnerability in the Graphviz software.
What is CVE-2019-11023?
The vulnerability is a NULL pointer dereference in the agroot() function within the libcgraph.a library of Graphviz version 2.39.20160612.1140.
The Impact of CVE-2019-11023
The vulnerability could allow an attacker to cause a denial of service or potentially execute arbitrary code on the affected system.
Technical Details of CVE-2019-11023
This section provides more technical insights into the CVE.
Vulnerability Description
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.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Graphviz 2.39.20160612.1140
Exploitation Mechanism
The vulnerability can be exploited through the usage of graphml2gv.
Mitigation and Prevention
Protecting systems from this vulnerability is crucial.
Immediate Steps to Take
- Apply the latest security patches provided by the vendor.
- Consider restricting access to the vulnerable components.
Long-Term Security Practices
- Regularly update and patch software to prevent known vulnerabilities.
- Implement strong access controls and monitoring mechanisms.
Patching and Updates
Ensure that the affected software, in this case, Graphviz, is updated to a version that addresses the NULL pointer dereference vulnerability.