CVE-2015-5333

Name: CVE-2015-5333
Creator: NVD / NIST
Published: 2020-01-23T21:15:12.317+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.98%

Last modified Jun 17, 2026

CVE-2015-5333 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Memory leak in the OBJ_obj2txt function in LibreSSL before 2.3.1 allows remote attackers to cause a denial of service (memory consumption) via a large number of ASN.1 object identifiers in X.509 certificates.. EPSS estimates a 1.98% chance of exploitation in the next 30 days.

Description

Memory leak in the OBJ_obj2txt function in LibreSSL before 2.3.1 allows remote attackers to cause a denial of service (memory consumption) via a large number of ASN.1 object identifiers in X.509 certificates.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.98%

78.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions
Openbsd	Libressl	< 2.3.1
Opensuse	Opensuse	13.2

References

http://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.3.1-relnotes.txtRelease Notes, Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2015-10/msg00050.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/133998/Qualys-Security-Advisory-LibreSSL-Leak-Overflow.htmlExploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/archive/1/536692/100/0/threadedBroken Link
http://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.3.1-relnotes.txtRelease Notes, Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2015-10/msg00050.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/133998/Qualys-Security-Advisory-LibreSSL-Leak-Overflow.htmlExploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/archive/1/536692/100/0/threadedBroken Link

Timeline

Published: Jan 23, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-5333?

How severe is CVE-2015-5333?

CVE-2015-5333 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.98% probability of exploitation in the next 30 days.

How do I fix CVE-2015-5333?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-5333?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST