CVE-2015-5334: OpenBSD Libressl

Critical severity, CVSS 9.8. EPSS: 3.5% chance of exploitation in the next 30 days.

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.

Affected products

  • OpenBSD Libressl: before 2.3.1 (fixed in 2.3.1)
  • Opensuse Opensuse: version 13.2 only

Published 2020-01-23. Last modified 2026-06-17.