CVE-2016-6309 Information

Description

statem/statem.c in OpenSSL 1.1.0a does not consider memory-block movement after a realloc call which allows remote attackers to cause a denial of service (use-after-free) or possibly execute arbitrary code via a crafted TLS session.

CVSS Vector

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

Reference

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759 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.securityfocus.com/bid/93177 http://www.securitytracker.com/id/1036885 http://www-01.ibm.com/support/docview.wss?uid=swg21995039 https://bto.bluecoat.com/security-advisory/sa132 https://git.openssl.org/?p=openssl.git;a=commit;h=acacbfa7565c78d2273c0b2a2e5e803f44afefeb https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03856en_us https://www.openssl.org/news/secadv/20160926.txt https://www.tenable.com/security/tns-2016-16 https://www.tenable.com/security/tns-2016-20

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8