Integer overflow in Wireshark

1) Integer overflow

EUVDB-ID: #VU33559

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-2017-5596

CWE-ID: CWE-190 - Integer overflow

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 to 2.2.3 and 2.0.0 to 2.0.9, the ASTERIX dissector could go into an infinite loop, triggered by packet injection or a malformed capture file. This was addressed in epan/dissectors/packet-asterix.c by changing a data type to avoid an integer overflow. <a href="http://cwe.mitre.org/data/definitions/835.html">CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')</a>

Mitigation

Install update from vendor's website.

Vulnerable software versions

Wireshark: 2.0.0 - 2.2.3

CPE2.3

• cpe:2.3:a:wireshark_org:wireshark:2.0.9:*:*:*:*:*:*:*
• cpe:2.3:a:wireshark_org:wireshark:2.2.3:*:*:*:*:*:*:*

External links

http://www.debian.org/security/2017/dsa-3811
http://www.securityfocus.com/bid/95795
http://www.securitytracker.com/id/1037694
http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=13344
http://code.wireshark.org/review/#/c/19746/
http://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=781f03580c81339513bb1238b202b72469a1240b
http://www.wireshark.org/security/wnpa-sec-2017-01.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.