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CVE-2015-5334
CRITICAL
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.
Published: Jan 23, 2020
Modified: Jun 17, 2026
CWE-787
CVSS Metrics
CVSSv3
Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products (2)
| Vendor | Product | Version |
|---|---|---|
| openbsd | libressl | * < 2.3.1 |
| opensuse | opensuse | 13.2 |
GitHub Security Advisory GHSA-6q9j-c3rh-x87m
Off-by-one error in the OBJ_obj2txt function in LibreSSL before 2.3.1 allows remote attackers to...
References (10)
- http://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.3.1-relnotes.txt Release Notes, Vendor Advisory
- http://lists.opensuse.org/opensuse-updates/2015-10/msg00050.html Mailing List, Third Party Advisory
- http://packetstormsecurity.com/files/133998/Qualys-Security-Advisory-LibreSSL-Leak-Overflow.html Exploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2015/Oct/75 Exploit, Mailing List, Third Party Advisory
- 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 Notes, Vendor Advisory
- http://lists.opensuse.org/opensuse-updates/2015-10/msg00050.html Mailing List, Third Party Advisory
- http://packetstormsecurity.com/files/133998/Qualys-Security-Advisory-LibreSSL-Leak-Overflow.html Exploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2015/Oct/75 Exploit, Mailing List, Third Party Advisory
- http://www.securityfocus.com/archive/1/archive/1/536692/100/0/threaded Broken Link
Risk Scores
CVSS Score
9.8 / 10
EPSS Score
3.49%
Top 12% most likely to be exploited
Threat Score
40.2 / 100
Data Sources
NVD
EPSS
GitHub