Vulnerability identifier: #VU11846

Vulnerability risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-0016

CWE-ID: CWE-332

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Stunnel
Client/Desktop applications / Encryption software

Vendor: Stunnel.org

Description
The vulnerability allows a remote attacker to obtain potentially sensitive information on the targets system.

The weakness exists due to improper update of the state of the OpenSSL pseudo-random number generator (PRNG), which causes subsequent children with the same process ID to use the same entropy pool, when using fork threading. A remote attacker can gain access to potentially sensitive information.

Mitigation
Update to version 5.00.

Vulnerable software versions

Stunnel: 4.50 - 4.57

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External links
http://www.stunnel.org/sdf_ChangeLog.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.