Vulnerability identifier: #VU816

Vulnerability risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-6306

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenSSL
Server applications / Encryption software
Oracle Solaris
Operating systems & Components / Operating system
Oracle Linux
Operating systems & Components / Operating system
Oracle VM VirtualBox
Server applications / Virtualization software
Oracle VM Server for x86
Server applications / Other server solutions

Vendor: OpenSSL Software Foundation
Oracle

Description
The vulnerability allows a remote unauthenticated user to cause DoS conditions on the target system.
The weakess exists due insufficient length validation of certain TLS/SSL protocol handshake messages. By causing out-of-bounds read error attackers can trigger the affected service deny.
Successful exploitation of the vulnerability will result in denial of service on the vulnerable system.

Mitigation
Update 1.0.1 to version 1.0.1i.
Update 1.0.2 to version 1.0.2u.

Vulnerable software versions

OpenSSL: 1.0.2, 1.0.1

Oracle Solaris: 10 - 11.3

Oracle VM VirtualBox: 5.0.27, 5.1.7

Oracle VM Server for x86: 3.2 - 3.4

Oracle Linux: 5 - 7

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External links
http://www.openssl.org/news/secadv/20160922.txt
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.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.