Infinite loop in Wireshark



Published: 2017-04-13 | Updated: 2020-08-04
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-7702
CWE-ID CWE-835
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 one medium risk vulnerability.

1) Infinite loop

EUVDB-ID: #VU33534

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-2017-7702

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

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 2.2.5 and 2.0.0 to 2.0.11, the WBXML dissector could go into an infinite loop, triggered by packet injection or a malformed capture file. This was addressed in epan/dissectors/packet-wbxml.c by adding length validation.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Wireshark: 2.0.0 - 2.2.5

CPE2.3 External links

http://www.securityfocus.com/bid/97633
http://www.securitytracker.com/id/1038262
http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=13477
http://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=2f322f66cbcca2fefdaa630494f9d6c97eb659b7
http://security.gentoo.org/glsa/201706-12
http://www.wireshark.org/security/wnpa-sec-2017-13.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.



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