Vulnerability identifier: #VU22023

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-15166

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Tcpdump
Server applications / DLP, anti-spam, sniffers

Vendor: Tcpdump.org

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 lmp_print_data_link_subobjs() function in print-lmp.c. A remote attacker can create a specially crafted LMP data, trigger memory corruption and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Tcpdump: 4.9.0 - 4.9.2

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External links
http://github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9/CHANGES
http://github.com/the-tcpdump-group/tcpdump/commit/0b661e0aa61850234b64394585cf577aac570bf4
http://lists.debian.org/debian-lts-announce/2019/10/msg00015.html

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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.