CVE-2015-3216

MEDIUM

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.

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

Details

Source: MITRE

Published: 2015-07-07

Updated: 2018-01-05

Type: CWE-189

Risk Information

CVSS v2.0

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM