CVE-2015-3216

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-07-07 · updated 2026-06-17
Weakness: CWE-189

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.

Affected products

OpenSSL: 1.0.1e-25.el7
Red Hat Enterprise Linux: 7.0

References

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

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