#VU33600 Input validation error in Wireshark and Debian Linux - CVE-2016-9374

Vulnerability identifier: #VU33600

Vulnerability risk: Medium

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

CVE-ID: CVE-2016-9374

CWE-ID: CWE-20

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 attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can create a buffer over-read, triggered by network traffic or a capture file. This was addressed in epan/dissectors/packet-alljoyn.c by ensuring that a length variable properly tracked the state of a signature variable, pass it to the affected application and perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Wireshark: 2.0.0 - 2.0.7, 2.2.0 - 2.2.1

Debian Linux: 2.0.0 - 8.0

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External links
https://www.debian.org/security/2016/dsa-3719
https://www.securityfocus.com/bid/94369
https://www.securitytracker.com/id/1037313
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=12953
https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=a5770b6559b6e6765c4ef800e85ae42781ea4900
https://www.wireshark.org/security/wnpa-sec-2016-59.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.