An issue inTcpreplay v4.5.1 allows a local attacker to cause a denial of service via a crafted file to the tcpeditdltgetplugin function at src/tcpedit/plugins/dltutils.c.

Last updated 28 January 2025

Within tcpreplay's tcprewrite, a double free vulnerability has been identified in the dltlinuxsll2cleanup() function in plugins/dltlinuxsll2/linuxsll2.c. This vulnerability is triggered when tcpeditdltcleanup() indirectly invokes the cleanup routine multiple times on the same memory region. By supplying a specifically crafted pcap file to the tcprewrite binary, a local attacker can exploit this flaw to cause a Denial of Service (DoS) via memory corruption.

A heap-buffer-overflow vulnerability exists in the tcpliveplay utility of the tcpreplay-4.5.1. When a crafted pcap file is processed, the program incorrectly handles memory in the checksum calculation logic at dochecksummathliveplay in tcpliveplay.c, leading to a possible denial of service.

A vulnerability has been found in tcpreplay 4.5.1. This vulnerability affects the function maskcidr6 of the file cidr.c of the component tcpprep. The manipulation leads to heap-based buffer overflow. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. The researcher is able to reproduce this with the latest official release 4.5.1 and the current master branch. The code maintainer cannot reproduce this for 4.5.2-beta1. In his reply the maintainer explains that "[i]n that case, this is a duplicate that was fixed in 4.5.2."

tcpreplay v4.4.4 was discovered to contain an infinite loop via the tcprewrite function at get.c.