tcpreplay 4.5.1 tcpprep cidr.c mask_cidr6 heap-based overflow

Summaryinfo

A vulnerability described as problematic has been identified in tcpreplay 4.5.1. This affects the function mask_cidr6 of the file cidr.c of the component tcpprep. Executing a manipulation can lead to heap-based overflow. This vulnerability is registered as CVE-2025-9019. It is possible to launch the attack remotely. Furthermore, an exploit is available. 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."

Detailsinfo

A vulnerability has been found in tcpreplay 4.5.1 and classified as problematic. This vulnerability affects the function mask_cidr6 of the file cidr.c of the component tcpprep. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect availability.

The advisory is shared for download at github.com. This vulnerability was named CVE-2025-9019. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details and also a public exploit are known.

It is possible to download the exploit at drive.google.com. It is declared as proof-of-concept. 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." The vulnerability scanner Nessus provides a plugin with the ID 259999 (Linux Distros Unpatched Vulnerability : CVE-2025-9019), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (259999) and EUVD (EUVD-2025-24989). Additional details are provided at github.com. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

• tcpreplay

Version

• 4.5.1

License

• open-source

CPE 2.3info

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CPE 2.2info

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Submitinfo

Accepted

• Submit #623635: tcpreplay tcpprep tcpreplay version 6fcbf03 (the newest master in https://github.com/appneta/tcpreplay) Heap Buffer Overflow (by nipc-cxd)

Duplicate

• Submit #XXXXXX: Xxxxxxxxx Xxxxxxx Xxxxxxxxx Xxxxxxx Xxxxxxx (xxx Xxxxxx Xxxxxx Xx Xxxxx://xxxxxx.xxx/xxxxxxx/xxxxxxxxx) Xxxx Xxxxxx Xxxxxxxx (by nipc-cxd)
• Submit #XXXXXX: Xxxxxxxxx Xxxxxxx Xxxxxxxxx Xxxxxxx Xxxxxxx (xxx Xxxxxx Xxxxxx Xx Xxxxx://xxxxxx.xxx/xxxxxxx/xxxxxxxxx) Xxxx Xxxxxx Xxxxxxxx (by nipc-cxd)
• Submit #XXXXXX: Xxxxxxxxx Xxxxxxx Xxxxxxxxx Xxxxxxx Xxxxxxx (xxx Xxxxxx Xxxxxx Xx Xxxxx://xxxxxx.xxx/xxxxxxx/xxxxxxxxx) Xxxx Xxxxxx Xxxxxxxx (by nipc-cxd)
• Submit #XXXXXX: Xxxxxxxxx Xxxxxxx Xxxxxxxxx Xxxxxxx Xxxxxxx (xxx Xxxxxx Xxxxxx Xx Xxxxx://xxxxxx.xxx/xxxxxxx/xxxxxxxxx) Xxxx Xxxxxx Xxxxxxxx (by nipc-cxd)

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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