#VU53695 Heap-based buffer overflow in Tcpreplay - CVE-2020-24266

Vulnerability identifier: #VU53695

Vulnerability risk: Medium

CVSSv4.0: 2.7 [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/E:U/U:Green]

CVE-ID: CVE-2020-24266

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Tcpreplay
Client/Desktop applications / Other client software

Vendor: AppNeta

Description

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Tcpreplay: 3.4.2 - 4.3.3

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External links
https://github.com/appneta/tcpreplay/issues/617
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EA7K7VKDK2K3SY2DHQQYSCBGZLKPWXJ4/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M623ONZKOZL5Y7XQNHKXEPV76XYCPXQM/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LC3UMBJFBK5HYUX7H2NGXVFI2I2EMAOF/
https://security.gentoo.org/glsa/202105-21

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.