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CVE-2015-3216

4.3 · MEDIUM

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…

Published Jul 7, 2015redhatCWE-189EPSS 4.30%

Overview

CVE-2015-3216 is a medium-severity vulnerability affecting redhat enterprise_linux. It was published on July 7, 2015 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from redhat. Update enterprise_linux to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Reflists.opensuse.org/opensuse-security-announce/2015-06/msg00023.htmlReflists.opensuse.org/opensuse-security-announce/2015-06/msg00024.htmlReflists.opensuse.org/opensuse-security-announce/2015-06/msg00026.htmlReflists.opensuse.org/opensuse-security-announce/2015-07/msg00004.htmlReflists.opensuse.org/opensuse-security-announce/2015-07/msg00006.htmlRefrhn.redhat.com/errata/RHSA-2015-1115.htmlRefrhn.redhat.com/errata/RHSA-2016-2957.htmlRefwww.securityfocus.com/bid/75219Refwww.securitytracker.com/id/1032587Refbugzilla.redhat.com/show_bug.cgi?id=1225994

How CyberStrike helps

Frequently asked questions

What is CVE-2015-3216?

CVE-2015-3216 is a medium-severity vulnerability affecting redhat enterprise_linux. It was published on July 7, 2015 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

How severe is CVE-2015-3216?

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2015-3216?

Check the references section for vendor advisories and patches from redhat. Update enterprise_linux to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2015-3216?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-3216 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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