CVE-2023-2906: Wireshark CP2179 Parsing Divide By Zero DoS
AHA! has discovered a deinal-of-service issue with [Wireshark] from The Wireshark Foundation, and is issuing this disclosure in accordance with AHA!’s standard disclosure policy today, on Thursday, August 24, 2023. CVE-2023-2906 has been assigned to this issue.
Any questions about this disclosure should be directed to [email protected].
Executive Summary
Due to a failure in validating the length provided by an attacker-crafted CP2179 packet, Wireshark versions 2.0.0 through 4.0.7 is susceptible to a divide by zero allowing for a denial of service attack. CVE-2023-2906 appears to be an instance of CWE-369. Note that, according to the patch notes, this effect can only be achieved when a user triggers the vulnerable code patch with the “Decode As…” functionality of Wireshark (or the -d option for tshark), so this vulnerability is unlikely to be triggerable in an automated way.
