#VU87649 NULL pointer dereference in Tcpreplay - CVE-2023-43279

Vulnerability identifier: #VU87649

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-2023-43279

CWE-ID: CWE-476

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 NULL pointer dereference error within the mask_cidr6 component in cidr.c. A remote attacker can trigger denial of service conditions via crafted tcprewrite command.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Tcpreplay: 4.4.3 - 4.4.4

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External links
https://github.com/appneta/tcpreplay/issues/824
https://github.com/GabrielGanne/tcpreplay/commit/a0b6d847f468217b8fd675f788e6eca74a21a90c

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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.