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Vulnerability Details : CVE-2016-2181

The Anti-Replay feature in the DTLS implementation in OpenSSL before 1.1.0 mishandles early use of a new epoch number in conjunction with a large sequence number, which allows remote attackers to cause a denial of service (false-positive packet drops) via spoofed DTLS records, related to rec_layer_d1.c and ssl3_record.c.
Publish Date : 2016-09-16 Last Update Date : 2017-08-15
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 189

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2016:1940: openssl security update (Important) oval:com.redhat.rhsa:def:20161940 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2016-2181

# Product Type Vendor Product Version Update Edition Language
1 Application Openssl Openssl 1.0.1d Version Details Vulnerabilities
2 Application Openssl Openssl 1.0.1t Version Details Vulnerabilities
3 Application Openssl Openssl 1.0.1o Version Details Vulnerabilities
4 Application Openssl Openssl 1.0.1j Version Details Vulnerabilities
5 Application Openssl Openssl 1.0.1e Version Details Vulnerabilities
6 Application Openssl Openssl 1.0.1p Version Details Vulnerabilities
7 Application Openssl Openssl 1.0.1 Version Details Vulnerabilities
8 Application Openssl Openssl 1.0.1k Version Details Vulnerabilities
9 Application Openssl Openssl 1.0.1f Version Details Vulnerabilities
10 Application Openssl Openssl 1.0.1q Version Details Vulnerabilities
11 Application Openssl Openssl 1.0.1a Version Details Vulnerabilities
12 Application Openssl Openssl 1.0.1l Version Details Vulnerabilities
13 Application Openssl Openssl 1.0.1g Version Details Vulnerabilities
14 Application Openssl Openssl 1.0.1r Version Details Vulnerabilities
15 Application Openssl Openssl 1.0.1b Version Details Vulnerabilities
16 Application Openssl Openssl 1.0.1m Version Details Vulnerabilities
17 Application Openssl Openssl 1.0.1h Version Details Vulnerabilities
18 Application Openssl Openssl 1.0.1s Version Details Vulnerabilities
19 Application Openssl Openssl 1.0.1c Version Details Vulnerabilities
20 Application Openssl Openssl 1.0.1n Version Details Vulnerabilities
21 Application Openssl Openssl 1.0.1i Version Details Vulnerabilities
22 Application Openssl Openssl 1.0.2e Version Details Vulnerabilities
23 Application Openssl Openssl 1.0.2 Version Details Vulnerabilities
24 Application Openssl Openssl 1.0.2f Version Details Vulnerabilities
25 Application Openssl Openssl 1.0.2a Version Details Vulnerabilities
26 Application Openssl Openssl 1.0.2g Version Details Vulnerabilities
27 Application Openssl Openssl 1.0.2b Version Details Vulnerabilities
28 Application Openssl Openssl 1.0.2h Version Details Vulnerabilities
29 Application Openssl Openssl 1.0.2c Version Details Vulnerabilities
30 Application Openssl Openssl 1.0.2d Version Details Vulnerabilities
31 OS Oracle Linux 6.0 Version Details Vulnerabilities
32 OS Oracle Linux 7.0 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Openssl Openssl 30
Oracle Linux 2

- References For CVE-2016-2181

https://www.tenable.com/security/tns-2016-16 CONFIRM
https://www.openssl.org/news/vulnerabilities.html#y2017
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312 CONFIRM
https://git.openssl.org/?p=openssl.git;a=commit;h=1fb9fdc3027b27d8eb6a1e6a846435b070980770 CONFIRM
http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html CONFIRM
http://www.securityfocus.com/bid/92982
BID 92982 OpenSSL CVE-2016-2181 Denial of Service Vulnerability Release Date:2017-04-25
http://www.splunk.com/view/SP-CAAAPUE CONFIRM
http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html CONFIRM
http://www.securitytracker.com/id/1036690
SECTRACK 1036690
http://www.splunk.com/view/SP-CAAAPSV CONFIRM
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html CONFIRM
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759 CONFIRM
http://www-01.ibm.com/support/docview.wss?uid=swg21995039 CONFIRM
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html CONFIRM
https://bto.bluecoat.com/security-advisory/sa132 CONFIRM

- Metasploit Modules Related To CVE-2016-2181

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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