#VU42225 Input validation error in Wireshark - CVE-2013-7113

Vulnerability identifier: #VU42225

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-7113

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Wireshark
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Wireshark.org

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

epan/dissectors/packet-bssgp.c in the BSSGP dissector in Wireshark 1.10.x before 1.10.4 incorrectly relies on a global variable, which allows remote attackers to cause a denial of service (application crash) via a crafted packet.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Wireshark: 1.10.0 - 1.10.3

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External links
https://anonsvn.wireshark.org/viewvc/trunk-1.10/epan/dissectors/packet-bssgp.c?r1=53803&r2=53802&pathrev=53803
https://anonsvn.wireshark.org/viewvc?view=revision&revision=53803
https://lists.opensuse.org/opensuse-updates/2014-01/msg00007.html
https://lists.opensuse.org/opensuse-updates/2014-01/msg00011.html
https://secunia.com/advisories/56052
https://secunia.com/advisories/56313
https://www.debian.org/security/2013/dsa-2825
https://www.wireshark.org/security/wnpa-sec-2013-67.html
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=9488

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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.