#VU21987 Out-of-bounds read in Tcpdump - CVE-2018-14463

Vulnerability identifier: #VU21987

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-14463

CWE-ID: CWE-125

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 condition in print-vrrp.c:vrrp_print() function within the VRRP parser. A remote attacker can generate specially crafted VRRP data, trigger out-of-bounds read error and perform denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Tcpdump: 4.9.0 - 4.9.2

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External links
https://github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9/CHANGES

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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.