CVE-2015-5334

high-risk
Published 2020-01-23

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.

Do I need to act?

~
9.9% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (2)

Libressl

Affected Vendors

Openbsd Opensuse

References (10)

Release Notes http://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.3.1-relnotes.txt
Mailing List http://lists.opensuse.org/opensuse-updates/2015-10/msg00050.html
Exploit http://packetstormsecurity.com/files/133998/Qualys-Security-Advisory-LibreSSL-Le...
Exploit http://seclists.org/fulldisclosure/2015/Oct/75
Broken Link http://www.securityfocus.com/archive/1/archive/1/536692/100/0/threaded
Release Notes http://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.3.1-relnotes.txt
Mailing List http://lists.opensuse.org/opensuse-updates/2015-10/msg00050.html
Exploit http://packetstormsecurity.com/files/133998/Qualys-Security-Advisory-LibreSSL-Le...
Exploit http://seclists.org/fulldisclosure/2015/Oct/75
Broken Link http://www.securityfocus.com/archive/1/archive/1/536692/100/0/threaded
50
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 11/34 · Low
Exposure 7/34 · Low