Input validation error in Wireshark

1) Input validation error

EUVDB-ID: #VU32649

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-2013-4930

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

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

CPE2.3

• cpe:2.3:a:wireshark_org:wireshark:1.8.0:*:*:*:*:*:*:*
• cpe:2.3:a:wireshark_org:wireshark:1.8.1:*:*:*:*:*:*:*
• cpe:2.3:a:wireshark_org:wireshark:1.8.2:*:*:*:*:*:*:*
• cpe:2.3:a:wireshark_org:wireshark:1.8.3:*:*:*:*:*:*:*
• cpe:2.3:a:wireshark_org:wireshark:1.8.4:*:*:*:*:*:*:*
• cpe:2.3:a:wireshark_org:wireshark:1.8.5:*:*:*:*:*:*:*
• cpe:2.3:a:wireshark_org:wireshark:1.8.6:*:*:*:*:*:*:*
• cpe:2.3:a:wireshark_org:wireshark:1.8.7:*:*:*:*:*:*:*
• cpe:2.3:a:wireshark_org:wireshark:1.8.8:*:*:*:*:*:*:*

External links

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