CVE-2016-2179

MEDIUM

Description

The DTLS implementation in OpenSSL before 1.1.0 does not properly restrict the lifetime of queue entries associated with unused out-of-order messages, which allows remote attackers to cause a denial of service (memory consumption) by maintaining many crafted DTLS sessions simultaneously, related to d1_lib.c, statem_dtls.c, statem_lib.c, and statem_srvr.c.

References

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759

http://rhn.redhat.com/errata/RHSA-2016-1940.html

http://www-01.ibm.com/support/docview.wss?uid=swg21995039

http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html

http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html

http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html

http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html

http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html

http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html

http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html

http://www.securityfocus.com/bid/92987

http://www.securitytracker.com/id/1036689

http://www.splunk.com/view/SP-CAAAPSV

http://www.splunk.com/view/SP-CAAAPUE

https://bto.bluecoat.com/security-advisory/sa132

https://git.openssl.org/?p=openssl.git;a=commit;h=f5c7f5dfbaf0d2f7d946d0fe86f08e6bcb36ed0d

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312

https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc

https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03856en_us

https://www.openssl.org/news/vulnerabilities.html#y2017

https://www.tenable.com/security/tns-2016-16

https://www.tenable.com/security/tns-2016-20

https://www.tenable.com/security/tns-2016-21

Details

Source: MITRE

Published: 2016-09-16

Modified: 2018-07-12

Type: CWE-399

Risk Information

CVSS v2.0

Base Score: 5

Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH