CVE-2015-5334

Public Exploit

Description

Off-by-one error in the OBJ_obj2txt function in LibreSSL before 2.3.1 allows remote attackers to cause a denial of service (program crash) or possible execute arbitrary code via a crafted X.509 certificate, which triggers a stack-based buffer overflow. Note: this vulnerability exists because of an incorrect fix for CVE-2014-3508.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 12.23% Top 10%
Vendor Advisory openbsd.org
Affected: LibreSSL LibreSSL
Published at:
Updated at:

References

Link Tags
http://packetstormsecurity.com/files/133998/Qualys-Security-Advisory-LibreSSL-Leak-Overflow.html exploit vdb entry third party advisory
http://seclists.org/fulldisclosure/2015/Oct/75 mailing list exploit third party advisory
http://www.securityfocus.com/archive/1/archive/1/536692/100/0/threaded broken link
http://lists.opensuse.org/opensuse-updates/2015-10/msg00050.html third party advisory mailing list
http://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.3.1-relnotes.txt release notes vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-5334?
CVE-2015-5334 has been scored as a critical severity vulnerability.
How to fix CVE-2015-5334?
To fix CVE-2015-5334, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-5334 being actively exploited in the wild?
It is possible that CVE-2015-5334 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~12% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2015-5334?
CVE-2015-5334 affects LibreSSL LibreSSL.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.