Description
The 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.
References (26)
Core 26
Core References
Vendor Advisory vendor-advisory
https://access.redhat.com/errata/RHSA-2018:2185
Vendor Advisory vendor-advisory
https://access.redhat.com/errata/RHSA-2018:2186
Vendor Advisory vendor-advisory
http://rhn.redhat.com/errata/RHSA-2016-1940.html
Third Party Advisory, VDB Entry vdb-entry
http://www.securityfocus.com/bid/92628
Third Party Advisory, VDB Entry vdb-entry
http://www.securitytracker.com/id/1036885
Various Sources vendor-advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc
Vendor Advisory vendor-advisory
https://access.redhat.com/errata/RHSA-2018:2187
Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
Vendor Advisory
https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=e97763c92c655dcf4af2860b3abd2bc4c8a267f9
Third Party Advisory
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
Third Party Advisory
http://www-01.ibm.com/support/docview.wss?uid=swg21995039
Patch, Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
Patch, Third Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.html
Patch, Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
Patch, Third Party Advisory
http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
Third Party Advisory
http://www.splunk.com/view/SP-CAAAPSV
Third Party Advisory
http://www.splunk.com/view/SP-CAAAPUE
Third Party Advisory
https://bto.bluecoat.com/security-advisory/sa132
Third Party Advisory
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312
Third Party Advisory
https://www.tenable.com/security/tns-2016-16
Third Party Advisory
https://www.tenable.com/security/tns-2016-20
Third Party Advisory
https://www.tenable.com/security/tns-2016-21
Scores
CVSS v3
7.5
EPSS
0.1038
EPSS Percentile
93.3%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-20
Status
published
Products (34)
openssl/openssl
1.0.1
openssl/openssl
1.0.1a
openssl/openssl
1.0.1b
openssl/openssl
1.0.1c
openssl/openssl
1.0.1d
openssl/openssl
1.0.1e
openssl/openssl
1.0.1f
openssl/openssl
1.0.1g
openssl/openssl
1.0.1h
openssl/openssl
1.0.1i
... and 24 more
Published
Sep 16, 2016
Tracked Since
Feb 18, 2026