Vulnerability identifier: #VU6905

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-2017-9343

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Wireshark
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Wireshark.org

Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to NULL pointer dereference in the MSNIP dissector when validating an IPv4 address. A remote attacker can inject a malformed packet epan/dissectors/packet-msnip.c onto the wire or persuade the target user to read a malformed packet trace file and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation
Update to version 2.0.13, 2.2.7 or later.

Vulnerable software versions

Wireshark: 2.0.0 - 2.0.12, 2.2.0 - 2.2.6

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External links
http://www.wireshark.org/security/wnpa-sec-2017-30.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.