Heap-based buffer overflow in Tcpreplay - CVE-2020-24266

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Main Vulnerability Database Vulnerabilities #VU53695

Heap-based buffer overflow in Tcpreplay - CVE-2020-24266

Published: June 1, 2021


Vulnerability identifier: #VU53695
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-24266
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the get_l2len() function in tcpprep. A remote attacker can pass specially crafted data to the application, trigger heap-based buffer overflow and crash the application.

Affected software

Tcpreplay
Gentoo Linux
Fedora
tcpreplay

How to mitigate CVE-2020-24266

Install updates from vendor's website.

Tcpreplay - update to 4.3.4
tcpreplay - addressed in versions 4.3.3-3.el6, 4.3.3-3.el7, 4.3.3-3.el8, 4.3.3-3.fc31, 4.3.3-3.fc32, 4.3.3-3.fc33

External References

Related Security Bulletins