Vulnerability identifier: #VU5215

Vulnerability risk: Low

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-3568

CWE-ID: CWE-749

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenSSL
Server applications / Encryption software

Vendor: OpenSSL Software Foundation

Description
The vulnerability allows a remote attacker to force SSLv3 usage.

When OpenSSL is configured with "no-ssl3" as a build option, servers could accept and complete a SSL 3.0 handshake, and clients could be configured to send them. A remote attacker can force SSLv3 usage and perfom a variety of attacks against SSLv3 protocol

Successful exploitation of the vulnerability may allow an attacker to obtain potentially sensitive information.

Mitigation
Update OpenSSL to version 0.9.8zc, 1.0.0o or 1.0.1j.

Vulnerable software versions

OpenSSL: 1.0.1 - 1.0.1i, 1.0.0 - 1.0.0n, 0.9.8 - 0.9.8zb

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External links
http://www.openssl.org/news/secadv/20141015.txt

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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.