7.5
CVSSv3

CVE-2016-6302

Published: 16/09/2016 Updated: 07/11/2023
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 447
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Vulnerability Summary

The tls_decrypt_ticket function in ssl/t1_lib.c in OpenSSL prior to 1.1.0 does not consider the HMAC size during validation of the ticket length, which allows remote malicious users to cause a denial of service via a ticket that is too short.

Vulnerability Trend

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openssl openssl 1.0.1m

openssl openssl 1.0.2a

openssl openssl 1.0.1j

openssl openssl 1.0.1h

openssl openssl 1.0.2e

openssl openssl 1.0.1r

openssl openssl 1.0.2b

openssl openssl 1.0.1c

openssl openssl 1.0.1g

openssl openssl 1.0.2g

openssl openssl 1.0.1a

openssl openssl 1.0.2h

openssl openssl 1.0.1d

openssl openssl 1.0.1t

openssl openssl 1.0.2c

openssl openssl 1.0.1p

openssl openssl 1.0.1k

openssl openssl 1.0.1b

openssl openssl 1.0.1n

openssl openssl 1.0.1q

openssl openssl 1.0.1e

openssl openssl 1.0.1l

openssl openssl 1.0.1f

openssl openssl 1.0.1s

openssl openssl 1.0.1o

openssl openssl 1.0.2

openssl openssl 1.0.2f

openssl openssl 1.0.1i

openssl openssl 1.0.1

openssl openssl 1.0.2d

oracle solaris 11.3

oracle solaris 10

oracle linux 6

oracle linux 7

Vendor Advisories

Synopsis Moderate: Red Hat JBoss Core Services Apache HTTP Server 2429 security update Type/Severity Security Advisory: Moderate Topic Red Hat JBoss Core Services Pack Apache Server 2429 packages are now availableRed Hat Product Security has rated this release as having a security impactof Moderate A ...
Synopsis Moderate: Red Hat JBoss Core Services Apache HTTP Server 2429 RHEL 7 security update Type/Severity Security Advisory: Moderate Topic Red Hat JBoss Core Services Pack Apache Server 2429 packages are now available for Red Hat Enterprise Linux 7Red Hat Product Security has rated this release as ...
Synopsis Moderate: Red Hat JBoss Core Services Apache HTTP Server 2429 RHEL 6 security update Type/Severity Security Advisory: Moderate Topic Red Hat JBoss Core Services Pack Apache Server 2429 packages are now available for Red Hat Enterprise Linux 6Red Hat Product Security has rated this release as h ...
Synopsis Important: openssl security update Type/Severity Security Advisory: Important Topic An update for openssl is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Sc ...
USN-3087-1 introduced a regression in OpenSSL ...
Several security issues were fixed in OpenSSL ...
It was discovered that OpenSSL did not always use constant time operations when computing Digital Signature Algorithm (DSA) signatures A local attacker could possibly use this flaw to obtain a private DSA key belonging to another user or service running on the same system (CVE-2016-2178) It was discovered that the Datagram TLS (DTLS) implementati ...
An integer underflow flaw leading to a buffer over-read was found in the way OpenSSL parsed TLS session tickets A remote attacker could use this flaw to crash a TLS server using OpenSSL if it used SHA-512 as HMAC for session tickets ...
If a server uses SHA512 for TLS session ticket HMAC it is vulnerable to a DoS attack where a malformed ticket will result in an OOB read which will ultimately crash The use of SHA512 in TLS session tickets is comparatively rare as it requires a custom server callback and ticket lookup mechanism ...
On September 22, 2016, the OpenSSL Software Foundation released an advisory that describes 14 vulnerabilities Of these 14 vulnerabilities, the OpenSSL Software Foundation classifies one as “Critical Severity,” one as “Moderate Severity,” and the other 12 as “Low Severity” Subsequently, on September 26, the OpenSSL Software Foundatio ...
Nessus is potentially impacted by several vulnerabilities in OpenSSL (20160926) that were recently disclosed and fixed Note that due to the time involved in doing a full analysis of each issue, Tenable has opted to upgrade the included version of OpenSSL as a precaution, and to save time These vulnerabilities may impact Nessus and include: CVE-2 ...
LCE 481 is possibly impacted by multiple vulnerabilities reported in third-party libraries Tenable has not investigated each one to determine if it is exploitable or the vulnerable code path can be reached Instead, Dev has upgraded the impacted libraries as a faster and safer alternative Due to the number of library upgrades and the potential ...
Tenable's Passive Vulnerability Scanner (PVS) uses third-party libraries to provide certain standardized functionality Four of these libraries were found to contain vulnerabilities and were fixed upstream Those fixes have been integrated despite there being no known exploitation scenarios related to PVS OpenSSL ssl/statem/statemc read_state_ma ...

Exploits

Orion Elite Hidden IP Browser Pro versions 10 through 79 have insecure versions of Tor and OpenSSL included and also suffer from man-in-the-middle vulnerabilities ...

References

CWE-20http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.htmlhttp://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.htmlhttp://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.htmlhttp://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.htmlhttp://www.securityfocus.com/bid/92628http://www.splunk.com/view/SP-CAAAPUEhttp://www.splunk.com/view/SP-CAAAPSVhttps://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312https://bto.bluecoat.com/security-advisory/sa132http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759https://www.tenable.com/security/tns-2016-16http://www-01.ibm.com/support/docview.wss?uid=swg21995039http://www.securitytracker.com/id/1036885http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.htmlhttp://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlhttps://www.tenable.com/security/tns-2016-21https://www.tenable.com/security/tns-2016-20https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.aschttp://rhn.redhat.com/errata/RHSA-2016-1940.htmlhttp://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.htmlhttp://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.htmlhttps://access.redhat.com/errata/RHSA-2018:2187https://access.redhat.com/errata/RHSA-2018:2186https://access.redhat.com/errata/RHSA-2018:2185https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdfhttps://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=e97763c92c655dcf4af2860b3abd2bc4c8a267f9https://nvd.nist.govhttps://access.redhat.com/errata/RHSA-2018:2187https://usn.ubuntu.com/3087-2/https://www.cisa.gov/uscert/ics/advisories/icsa-22-349-21