#VU12717 Heap-based buffer overflow in Wireshark - CVE-2018-9261

Vulnerability identifier: #VU12717

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-9261

CWE-ID: CWE-122

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-nbap.c due to prohibiting the self-linking of DCH-IDs. A remote attacker can trick the victim into opening a specially crafted packet trace file, trigger infinite loop and heap-based buffer overflow and cause the NBAP dissector to crash.

Mitigation
Update to version 2.4.6 or 2.2.14.

Vulnerable software versions

Wireshark: 2.2.0 - 2.2.13, 2.4.0 - 2.4.5

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External links
https://www.wireshark.org/security/wnpa-sec-2018-18.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.