A vulnerability was found in tcpreplay 4.3.0 Beta 1. It has been classified as critical. Affected is the function get_l2len of the file common/get.c. The manipulation as part of a Crafted Packet leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

get_l2len in common/get.c in Tcpreplay 4.3.0 beta 1 allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via crafted packets, as demonstrated by tcpprep.

The bug was discovered 07/03/2018. The weakness was shared 07/03/2018 (Website). The advisory is shared for download at github.com. This vulnerability is traded as CVE-2018-13112 since 07/03/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 120955 (Fedora 29 : tcpreplay (2018-5f91054677)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 7 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (120955). The entries 124571, 124573, 124774 and 125684 are related to this item.

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• tcpreplay

Version

• 4.3.0 Beta 1

License

• open-source

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