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Fencer Intel
medium 4.3

CVE-2015-3216 json

Race condition in a certain Red Hat patch to the PRNG lock implementation in the ssleay_rand_bytes function in OpenSSL, as distributed in o…

published 2015-07-07 11 y ago modified 2026-06-17 4 mo ago also EUVD-2015-3279

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.3%
EPSS 4.3% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

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.

Patch / fix

  • openssl RHEL 6 1.0.1e-30.el6_6.11
  • openssl RHEL 7 1:1.0.1e-42.el7_1.8
  • openssl RHEL 7 1:1.0.1e-42.ael7b_1.8
  • openssl-libs RHEL 7 1:1.0.1e-42.el7_1.8
  • openssl-libs RHEL 7 1:1.0.1e-42.ael7b_1.8
  • openssl-perl RHEL 6 1.0.1e-30.el6_6.11
  • openssl-perl RHEL 7 1:1.0.1e-42.el7_1.8
  • openssl-perl RHEL 7 1:1.0.1e-42.ael7b_1.8

red hat advisories RHSA-2015:1115

  • compat-openssl098 SLED 12, SLE Module for Legacy 12 0.9.8j-78.1
  • openssl SLES for SAP 12, SLES 12, SLED 12 +1 more 1.0.1i-25.1
  • libqt4 SLES 12 SP1, SLES 12, SLED 12 SP1 +7 more 4.8.6-7.1
  • libqt4-sql-plugins SLES 12 SP1, SLES 12, SLED 12 SP1 +7 more 4.8.6-7.1

suse advisories SUSE-SU-2015:1150-1SUSE-SU-2015:1143-1SUSE-SU-403SUSE-SU-403 Forbidden-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-3216 updated cvss 4.3

openssl: Crash in ssleay_rand_bytes due to locking regression

  • Red Hat JBoss Enterprise Web Server 3 openssl
    affected: no fix available
  • Red Hat Enterprise Linux Client (v. 7) openssl 1.0.1e-42.el7_1.8, openssl-libs 1.0.1e-42.el7_1.8 Red Hat Enterprise Linux Client Optional (v. 7) openssl-perl 1.0.1e-42.el7_1.8 Red Hat Enterprise Linux ComputeNode (v. 7) openssl 1.0.1e-42.el7_1.8, openssl-libs 1.0.1e-42.el7_1.8 Red Hat Enterprise Linux ComputeNode Optional (v. 7) openssl-perl 1.0.1e-42.el7_1.8 Red Hat Enterprise Linux Desktop (v. 6) openssl 1.0.1e-30.el6_6.11 Red Hat Enterprise Linux Desktop Optional (v. 6) openssl-perl 1.0.1e-30.el6_6.11
    +10 more products
    Red Hat Enterprise Linux HPC Node (v. 6) openssl 1.0.1e-30.el6_6.11 Red Hat Enterprise Linux HPC Node Optional (v. 6) openssl-perl 1.0.1e-30.el6_6.11 Red Hat Enterprise Linux Server (v. 6) openssl 1.0.1e-30.el6_6.11 Red Hat Enterprise Linux Server (v. 7) openssl 1.0.1e-42.el7_1.8, openssl 1.0.1e-42.ael7b_1.8, openssl-libs 1.0.1e-42.el7_1.8, openssl-libs 1.0.1e-42.ael7b_1.8 Red Hat Enterprise Linux Server Optional (v. 6) openssl-perl 1.0.1e-30.el6_6.11 Red Hat Enterprise Linux Server Optional (v. 7) openssl-perl 1.0.1e-42.el7_1.8, openssl-perl 1.0.1e-42.ael7b_1.8 Red Hat Enterprise Linux Workstation (v. 6) openssl 1.0.1e-30.el6_6.11 Red Hat Enterprise Linux Workstation (v. 7) openssl 1.0.1e-42.el7_1.8, openssl-libs 1.0.1e-42.el7_1.8 Red Hat Enterprise Linux Workstation Optional (v. 6) openssl-perl 1.0.1e-30.el6_6.11 Red Hat Enterprise Linux Workstation Optional (v. 7) openssl-perl 1.0.1e-42.el7_1.8
    fixed: vendor fix RHSA-2015:1115
  • Red Hat JBoss Core Services
    fixed: vendor fix RHSA-2016:2957
  • Red Hat Enterprise Linux 5 openssl Red Hat JBoss Enterprise Application Platform 6 openssl Red Hat JBoss Enterprise Web Server 2 openssl
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.27% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-189 Numeric Errors
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.