#VU8335 Infinite loop in Tcpdump - CVE-2017-12997

Vulnerability identifier: #VU8335

Vulnerability risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-12997

CWE-ID: CWE-835

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 cause DoS condition on the target system.

The weakness exists due to infinite loop in the LLDP component. A remote attacker can send specially crafted data and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation
Update to version 4.9.2.

Vulnerable software versions

Tcpdump: 4.9.0

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External links
https://www.tcpdump.org/tcpdump-changes.txt

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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.