#VU1974 Resource management error in OpenSSL - CVE-2016-2179

Vulnerability identifier: #VU1974

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2016-2179

CWE-ID: CWE-399

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 perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources in the Datagram TLS (DTLS) implementation. A remote attacker can initiate and maintain multiple crafted DTLS sessions simultaneously and perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

OpenSSL: before 1.0.1u, 1.0.2i, 1.0.1u, 1.0.1u

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2179
https://git.openssl.org/?p=openssl.git;a=commit;h=f5c7f5dfbaf0d2f7d946d0fe86f08e6bcb36ed0d

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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.