Vulnerability identifier: #VU41294

Vulnerability risk: Medium

CVSSv3.1: 4.6 [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-2014-6423

CWE-ID: CWE-399

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 tvb_raw_text_add function in epan/dissectors/packet-megaco.c in the MEGACO dissector in Wireshark 1.10.x before 1.10.10 and 1.12.x before 1.12.1 allows remote attackers to cause a denial of service (infinite loop) via an empty line.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Wireshark: 1.10.0 - 1.10.9, 1.12.0

---

External links
http://linux.oracle.com/errata/ELSA-2014-1676
http://linux.oracle.com/errata/ELSA-2014-1677
http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00033.html
http://lists.opensuse.org/opensuse-updates/2014-09/msg00058.html
http://rhn.redhat.com/errata/RHSA-2014-1676.html
http://rhn.redhat.com/errata/RHSA-2014-1677.html
http://secunia.com/advisories/60280
http://secunia.com/advisories/60578
http://secunia.com/advisories/61929
http://secunia.com/advisories/61933
http://www.debian.org/security/2014/dsa-3049
http://www.wireshark.org/security/wnpa-sec-2014-13.html
http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=10333
http://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=9112a099d7cc2cd924b7c667bf27f6e112b970c6

---

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.