#VU21990 Out-of-bounds read

Published: 2019-10-21

Vulnerability identifier: #VU21990

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-2018-14466


Exploitation vector: Network

Exploit availability: No

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

Vendor: Tcpdump.org


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

The vulnerability exists due to a boundary condition in print-rx.c:rx_cache_find() and rx_cache_insert() functions within the Rx parser. A remote attacker can generate specially crafted RSVP data, trigger out-of-bounds read error and perform denial of service attack.

Install updates from vendor's website.

Vulnerable software versions

Tcpdump: 4.9.0 - 4.9.2


External links

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.

Latest bulletins with this vulnerability