Integer Overflow or Wraparound Affecting openssl package, versions <1:1.0.1e-51.el7_2.7
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL7-OPENSSL-4678713
- published26 Jul 2021
- disclosed23 Aug 2016
Introduced: 23 Aug 2016
CVE-2016-6302 (opens in a new tab)How to fix?
Upgrade RHEL:7 openssl to version 1:1.0.1e-51.el7_2.7 or higher.
This issue was patched in RHSA-2016:1940.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
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
- http://www.securityfocus.com/bid/92628
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
- https://bto.bluecoat.com/security-advisory/sa132
- https://git.openssl.org/?p=openssl.git;a=commit;h=e97763c92c655dcf4af2860b3abd2bc4c8a267f9
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312
- https://www.tenable.com/security/tns-2016-16
- https://www.tenable.com/security/tns-2016-20
- https://www.tenable.com/security/tns-2016-21
- http://www-01.ibm.com/support/docview.wss?uid=swg21995039
- http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
- http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
- http://www.splunk.com/view/SP-CAAAPSV
- http://www.splunk.com/view/SP-CAAAPUE
- https://access.redhat.com/security/cve/CVE-2016-6302
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc
- https://www.openssl.org/news/vulnerabilities.html#y2017
- http://rhn.redhat.com/errata/RHSA-2016-1940.html
- https://access.redhat.com/errata/RHSA-2016:1940
- http://www.securitytracker.com/id/1036885
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=e97763c92c655dcf4af2860b3abd2bc4c8a267f9