#VU645 Denial of service in OpenSSL - CVE-2016-6305

Vulnerability identifier: #VU645

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-6305

CWE-ID: CWE-371

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenSSL
Server applications / Encryption software

Vendor: OpenSSL Software Foundation

Description
The vulnerability allows a remote authenticated user to trigger denial of service on the target system.
The weakness exists due to state error. By sendidng specially crafted files attackers can cause a flaw in SSL_peek() that may lead to the affected service hanging.
Successful exploitation of the vulnerability results in denial of service on the vulnerable system.

Mitigation
Update to 1.1.0a.

Vulnerable software versions

OpenSSL: 1.1.0

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External links
https://www.openssl.org/news/secadv/20160922.txt

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.