CVE-2023-4256: Broadcom Tcpreplay

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Within tcpreplay's tcprewrite, a double free vulnerability has been identified in the tcpedit_dlt_cleanup() function within plugins/dlt_plugins.c. This vulnerability can be exploited by supplying a specifically crafted file to the tcprewrite binary. This flaw enables a local attacker to initiate a Denial of Service (DoS) attack.

Affected products

• Broadcom Tcpreplay: version 4.4.3 only; version 4.4.4 only
• Fedoraproject Extra Packages For Enterprise Linux: version 8.0 only
• Fedoraproject Fedora: version 39 only

Published 2023-12-21. Last modified 2026-06-17.