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Vulnerability record · CVE-2015-5333 · published 23 January 2020

CVE-2015-5333: Openbsd libressl uncontrolled resource consumption vulnerability

Openbsd · Libressl

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.

7.5 CVSS 3.1 High EPSS 2.0% · top 20.3% CWE-400 · Uncontrolled resource consumption
7.5CVSS 3.1 base score, v2 5.0
2.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
8References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.3.1-relnotes.txt Release NotesVendor Advisory
http://lists.opensuse.org/opensuse-updates/2015-10/msg00050.html Mailing ListThird Party Advisory
http://packetstormsecurity.com/files/133998/Qualys-Security-Advisory-LibreSSL-Leak-Overflow.html ExploitThird Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/archive/1/536692/100/0/threaded Broken Link
http://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.3.1-relnotes.txt Release NotesVendor Advisory
http://lists.opensuse.org/opensuse-updates/2015-10/msg00050.html Mailing ListThird Party Advisory
http://packetstormsecurity.com/files/133998/Qualys-Security-Advisory-LibreSSL-Leak-Overflow.html ExploitThird Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/archive/1/536692/100/0/threaded Broken Link

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Source: NIST National Vulnerability Database (record CVE-2015-5333), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.