Buffer overflow in Libressl
CVE-2015-5334
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 buf…
Vulnerability class: Buffer Overflow
EPSS: 0.035 (87.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Libressl — versions before 2.3.1
- Openbsd Libressl
- Opensuse — versions 13.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (Exploit, Mailing List, Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (x_refsource_MISC, Broken Link)
- secalert@redhat.com (Mailing List, Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (x_refsource_MISC, Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2015-5334?
- CVE-2015-5334 is a critical-severity vulnerability in Libressl, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2020-01-23.
- How severe is CVE-2015-5334?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2015-5334 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.