Vulnerability in OpenSSL
CVE-2015-3216
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.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.043 (90.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.043 · newest: 0.043 · change: 0.000
Affected products
- OpenSSL — versions 1.0.1e-25.el7
- Red Hat Enterprise Linux — versions 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.opensuse.org/opensuse-security-announce/2015-07/msg00006.html (vendor-advisory)
- www.securitytracker.com/id/1032587 (vdb-entry)
- lists.opensuse.org/opensuse-security-announce/2015-06/msg00026.html (vendor-advisory)
- rhn.redhat.com/errata/RHSA-2015-1115.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2015-07/msg00004.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2015-06/msg00024.html (vendor-advisory)
- www.securityfocus.com/bid/75219 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi
- rhn.redhat.com/errata/RHSA-2016-2957.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2015-06/msg00023.html (vendor-advisory)
Frequently asked questions
- What is CVE-2015-3216?
- CVE-2015-3216 is a vulnerability in OpenSSL, classified under CWE-189. Published 2015-07-07.
- Is CVE-2015-3216 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.