#VU11466 Null pointer dereference in Wireshark - CVE-2017-17997

Vulnerability identifier: #VU11466

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-2017-17997

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 in epan/dissectors/packet-mrdisc.c due to the MRDISC dissector misuses a NULL pointer and crashes. A remote attacker can trigger NULL pointer dereference and cause the service to crash.

Mitigation
Update to 2.2.12.

Vulnerable software versions

Wireshark: 2.2.0 - 2.2.11

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External links
https://www.wireshark.org/security/wnpa-sec-2018-02.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.