Vulnerability identifier: #VU40998

Vulnerability risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:U/RC:C]

CVE-ID: CVE-2014-9376

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Ettercap
Other software / Other software solutions

Vendor: ettercap.sourceforge.net

Description

The vulnerability allows remote attackers to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (out-of-bounds write) and possibly execute arbitrary code via a small (1) size variable value in the dissector_dhcp function in dissectors/ec_dhcp.c, (2) length value to the dissector_gg function in dissectors/ec_gg.c, or (3) string length to the get_decode_len function in ec_utils.c or a request without a (4) username or (5) password to the dissector_TN3270 function in dissectors/ec_TN3270.c.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Ettercap: 0.8.1

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External links
http://www.securityfocus.com/archive/1/534248/100/0/threaded
http://www.securityfocus.com/bid/71696
http://github.com/Ettercap/ettercap/pull/602
http://github.com/Ettercap/ettercap/pull/605
http://github.com/Ettercap/ettercap/pull/606
http://github.com/Ettercap/ettercap/pull/609
http://security.gentoo.org/glsa/201505-01
http://www.obrela.com/home/security-labs/advisories/osi-advisory-osi-1402/

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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.