CVE-2015-3216

Description

Race condition in a certain Red Hat patch to the PRNG lock implementation in the ssleay_rand_bytes function in OpenSSL, as distributed in openssl-1.0.1e-25.el7 in Red Hat Enterprise Linux (RHEL) 7 and other products, allows remote attackers to cause a denial of service (application crash) by establishing many TLS sessions to a multithreaded server, leading to use of a negative value for a certain length field.

Category

4.3
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 1.17% Top 25%
Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory opensuse.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00006.html vendor advisory
http://www.securitytracker.com/id/1032587 vdb entry
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00026.html vendor advisory
http://rhn.redhat.com/errata/RHSA-2015-1115.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00004.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00024.html vendor advisory
http://www.securityfocus.com/bid/75219 vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=1225994
http://rhn.redhat.com/errata/RHSA-2016-2957.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00023.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-3216?
CVE-2015-3216 has been scored as a medium severity vulnerability.
How to fix CVE-2015-3216?
To fix CVE-2015-3216, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-3216 being actively exploited in the wild?
It is possible that CVE-2015-3216 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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