CVE-2016-6302

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Summary

CVECVE-2016-6302
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-09-16 05:59:12 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionThe tls_decrypt_ticket function in ssl/t1_lib.c in OpenSSL before 1.1.0 does not consider the HMAC size during validation of the ticket length, which allows remote attackers to cause a denial of service via a ticket that is too short.

Risk And Classification

Primary CVSS: v3.0 7.5 HIGH from [email protected]

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.103830000 probability, percentile 0.932460000 (date 2026-05-06)

Problem Types: CWE-20 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary7.5HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.0[email protected]Primary5AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

AV:N/AC:L/Au:N/C:N/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Openssl Openssl 1.0.1 All All All
Application Openssl Openssl 1.0.1a All All All
Application Openssl Openssl 1.0.1b All All All
Application Openssl Openssl 1.0.1c All All All
Application Openssl Openssl 1.0.1d All All All
Application Openssl Openssl 1.0.1e All All All
Application Openssl Openssl 1.0.1f All All All
Application Openssl Openssl 1.0.1g All All All
Application Openssl Openssl 1.0.1h All All All
Application Openssl Openssl 1.0.1i All All All
Application Openssl Openssl 1.0.1j All All All
Application Openssl Openssl 1.0.1k All All All
Application Openssl Openssl 1.0.1l All All All
Application Openssl Openssl 1.0.1m All All All
Application Openssl Openssl 1.0.1n All All All
Application Openssl Openssl 1.0.1o All All All
Application Openssl Openssl 1.0.1p All All All
Application Openssl Openssl 1.0.1q All All All
Application Openssl Openssl 1.0.1r All All All
Application Openssl Openssl 1.0.1s All All All
Application Openssl Openssl 1.0.1t All All All
Application Openssl Openssl 1.0.2 All All All
Application Openssl Openssl 1.0.2a All All All
Application Openssl Openssl 1.0.2b All All All
Application Openssl Openssl 1.0.2c All All All
Application Openssl Openssl 1.0.2d All All All
Application Openssl Openssl 1.0.2e All All All
Application Openssl Openssl 1.0.2f All All All
Application Openssl Openssl 1.0.2g All All All
Application Openssl Openssl 1.0.2h All All All
Operating System Oracle Linux 6 All All All
Operating System Oracle Linux 7 All All All
Operating System Oracle Solaris 10 All All All
Operating System Oracle Solaris 11.3 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Splunk Enterprise 6.4.5 addresses multiple vulnerabilities | Splunk af854a3a-2127-422b-91ae-364da2661108 www.splunk.com Third Party Advisory
Oracle VM Server for x86 Bulletin - October 2016 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
Oracle Critical Patch Update - October 2016 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
SA132 : OpenSSL Vulnerabilities 22-Sep-2016 and 26-Sep-2016 af854a3a-2127-422b-91ae-364da2661108 bto.bluecoat.com Third Party Advisory
Public KB - SA40312 - September 22 2016 OpenSSL Security Advisory af854a3a-2127-422b-91ae-364da2661108 kb.pulsesecure.net Third Party Advisory
Oracle Solaris Bulletin - October 2016 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
OpenSSL Multiple Bugs Let Remote Users Cause the Target Service to Crash - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
Juniper Networks - 2016-10 Security Bulletin: OpenSSL security updates af854a3a-2127-422b-91ae-364da2661108 kb.juniper.net Third Party Advisory
Oracle Critical Patch Update - October 2017 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com
Oracle Critical Patch Update - January 2018 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
[R1] LCE 4.8.2 Fixes Multiple Third-party Library Vulnerabilities - Security Advisory | Tenable Network Security af854a3a-2127-422b-91ae-364da2661108 www.tenable.com
Oracle Critical Patch Update - April 2018 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc af854a3a-2127-422b-91ae-364da2661108 security.FreeBSD.org
IBM Security Bulletin: Vulnerabilities in OpenSSL, OpenVPN and GNU glibc affect IBM Security Virtual Server Protection for VMware - United States af854a3a-2127-422b-91ae-364da2661108 www-01.ibm.com Third Party Advisory
OpenSSL CVE-2016-6302 Denial of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Oracle Linux Bulletin - October 2016 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf af854a3a-2127-422b-91ae-364da2661108 cert-portal.siemens.com
Oracle Critical Patch Update - July 2017 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
[R2] PVS 5.2.0 Fixes Multiple Third-party Library Vulnerabilities - Security Advisory | Tenable Network Security af854a3a-2127-422b-91ae-364da2661108 www.tenable.com
[R5] Nessus 6.9 Fixes Multiple Vulnerabilities - Security Advisory | Tenable Network Security af854a3a-2127-422b-91ae-364da2661108 www.tenable.com Third Party Advisory
git.openssl.org Git - openssl.git/commit af854a3a-2127-422b-91ae-364da2661108 git.openssl.org
Splunk Enterprise 6.5.1 addresses multiple OpenSSL vulnerabilities | Splunk af854a3a-2127-422b-91ae-364da2661108 www.splunk.com Third Party Advisory
git.openssl.org Git - openssl.git/commit MITRE git.openssl.org
/news/vulnerabilities.html MITRE www.openssl.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 390226 Oracle Managed Virtualization (VM) Server for x86 Security Update for Open Secure Sockets Layer (OpenSSL) (OVMSA-2021-0011)
  • 390284 Oracle Managed Virtualization (VM) Server for x86 Security Update for Open Secure Sockets Layer (OpenSSL) (OVMSA-2023-0013)
  • 591280 Siemens SCALANCE X-200RNA Switch Devices Denial of Service (DoS) Multiple Vulnerabilities (ICSA-22-349-21, SSA-412672)
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