VulnerabilityModified

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 buffer overflow.

CRITICAL 9.8EPSS 3.49%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (3.49%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 3.49% probability · 88th percentile
CISA KEV: Not listed
Weakness: CWE-787
Affected: openbsd/libressl · opensuse/opensuse
Source: secalert@redhat.com

References

http://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.3.1-relnotes.txtRelease Notes, Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2015-10/msg00050.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/133998/Qualys-Security-Advisory-LibreSSL-Leak-Overflow.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2015/Oct/75Exploit, Mailing List, Third Party Advisory
http://www.securityfocus.com/archive/1/archive/1/536692/100/0/threadedBroken Link
http://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.3.1-relnotes.txtRelease Notes, Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2015-10/msg00050.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/133998/Qualys-Security-Advisory-LibreSSL-Leak-Overflow.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2015/Oct/75Exploit, Mailing List, Third Party Advisory
http://www.securityfocus.com/archive/1/archive/1/536692/100/0/threadedBroken Link

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.