#VU38828 Uncontrolled Recursion in Wireshark and Debian Linux - CVE-2017-9766

Vulnerability identifier: #VU38828

Vulnerability risk: Medium

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:Green]

CVE-ID: CVE-2017-9766

CWE-ID: CWE-674

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Wireshark
Server applications / IDS/IPS systems, Firewalls and proxy servers
Debian Linux
Operating systems & Components / Operating system

Vendor: Wireshark.org
Debian

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

In Wireshark 2.2.7, PROFINET IO data with a high recursion depth allows remote attackers to cause a denial of service (stack exhaustion) in the dissect_IODWriteReq function in plugins/profinet/packet-dcerpc-pn-io.c.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Wireshark: 2.2.7

Debian Linux: 2.2.7 - 8.0

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External links
https://www.securityfocus.com/bid/99187
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=13811
https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=d6e888400ba64de3147d1111a4c23edf389b0000
https://lists.debian.org/debian-lts-announce/2019/01/msg00010.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.