Multiple vulnerabilities in Wireshark

Published: 2017-04-12 | Updated: 2020-08-08

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2016-7957 CVE-2016-7958
CWE-ID	CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Wireshark Server applications / IDS/IPS systems, Firewalls and proxy servers
Vendor	Wireshark.org

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU39208

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-7957

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

In Wireshark 2.2.0, the Bluetooth L2CAP dissector could crash, triggered by packet injection or a malformed capture file. This was addressed in epan/dissectors/packet-btl2cap.c by avoiding use of a seven-byte memcmp for potentially shorter strings.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Wireshark: 2.2.0

CPE2.3

cpe:2.3:a:wireshark_org:wireshark:2.2.0:*:*:*:*:*:*:*

External links

http://www.securityfocus.com/bid/97597
http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=12825
http://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=355b56b1c6c545072ac0c1225730b526c6749f0a
http://www.wireshark.org/security/wnpa-sec-2016-56.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Input validation error

EUVDB-ID: #VU39209