Cloud Vulnerability DB
A community-led vulnerabilities database
Vulnerability DatabaseCVE-2023-0416
CVE-2023-0416:
Wireshark vulnerability analysis and mitigation
Overview
The GNW dissector crash vulnerability (CVE-2023-0416) affects Wireshark versions 4.0.0 to 4.0.2 and 3.6.0 to 3.6.10. The vulnerability was discovered and disclosed on January 18, 2023, impacting the GNW (GeoNetworking) dissector component of Wireshark (Wireshark Advisory).
Technical details
The vulnerability occurs in the GNW dissector when processing malformed packets, specifically related to a heap-use-after-free issue when handling certain packet structures. The issue manifests in the dissectgeonw function within packet-geonw.c, where an assertion failure occurs with the condition '!(tmpval & 0xffffffff00000000)' (GitLab Issue).
Impact
When exploited, this vulnerability can cause Wireshark to crash, resulting in a denial of service condition. This can occur either through packet injection on a network or by opening a specially crafted capture file (Wireshark Advisory).
Mitigation and workarounds
The vulnerability has been fixed in Wireshark versions 4.0.3 and 3.6.11. Users are advised to upgrade to these or later versions to mitigate the risk (Wireshark Advisory).
Additional resources
Source: This report was generated using AI
Related Wireshark vulnerabilities:
Free Vulnerability Assessment
Benchmark your Cloud Security Posture
Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.
Additional Wiz resources
Get a personalized demo
Ready to see Wiz in action?
"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management