Vulnerability identifier: #VU32649

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2013-4930

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.

The dissect_dvbci_tpdu_hdr function in epan/dissectors/packet-dvbci.c in the DVB-CI dissector in Wireshark 1.8.x before 1.8.9 and 1.10.x before 1.10.1 does not validate a certain length value before decrementing it, which allows remote attackers to cause a denial of service (assertion failure and application exit) via a crafted packet.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Wireshark: 1.8.0 - 1.8.8

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External links
http://anonsvn.wireshark.org/viewvc/trunk/epan/dissectors/packet-dvbci.c?r1=50474&r2=50473&pathrev=50474
http://anonsvn.wireshark.org/viewvc?view=revision&revision=50474
http://lists.opensuse.org/opensuse-updates/2013-08/msg00004.html
http://lists.opensuse.org/opensuse-updates/2013-08/msg00009.html
http://secunia.com/advisories/54178
http://secunia.com/advisories/54296
http://secunia.com/advisories/54371
http://secunia.com/advisories/54425
http://www.debian.org/security/2013/dsa-2734
http://www.gentoo.org/security/en/glsa/glsa-201308-05.xml
http://www.wireshark.org/docs/relnotes/wireshark-1.10.1.html
http://www.wireshark.org/docs/relnotes/wireshark-1.8.9.html
http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=8916
http://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16929
http://www.wireshark.org/security/wnpa-sec-2013-48.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.