CVE-2016-6307

MEDIUM

OpenSSL <1.1.0a - DoS

Title source: llm

Description

The state-machine implementation in OpenSSL 1.1.0 before 1.1.0a allocates memory before checking for an excessive length, which might allow remote attackers to cause a denial of service (memory consumption) via crafted TLS messages, related to statem/statem.c and statem/statem_lib.c.

References (16)

[Vendor Advisory] http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759

[Various Sources] http://www-01.ibm.com/support/docview.wss?uid=swg21995039

[Vendor Advisory] http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html

[Vendor Advisory] http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1036885

[Various Sources] https://bto.bluecoat.com/security-advisory/sa132

[Vendor Advisory] https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

[Vendor Advisory] https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=4b390b6c3f8df925dc92a3dd6b022baa9a2f4650

[Vendor Advisory] https://www.openssl.org/news/secadv/20160922.txt

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/93152

[Vendor Advisory] http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html

[Vendor Advisory] http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html

[Vendor Advisory] http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html

[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 5.9

EPSS 0.2044

EPSS Percentile 95.5%

Attack Vector NETWORK

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

Classification

CWE

CWE-400

Status published

Affected Products (2)

openssl/openssl

n/a/n/a

Timeline

Published Sep 26, 2016

Tracked Since Feb 18, 2026