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NVD is the U.S. government repository of standards based vulnerability management data. This data enables automation of vulnerability management, security measurement, and compliance (e.g. FISMA).
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Last updated: 10/25/2014 6:53:40 PM

CVE Publication rate: 50.93

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Workload Index
Vulnerability Workload Index: 14.84
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NVD is a product of the NIST Computer Security Division and is sponsored by the Department of Homeland Security's National Cyber Security Division. It supports the U.S. government multi-agency (OSD, DHS, NSA, DISA, and NIST) Information Security Automation Program. It is the U.S. government content repository for the Security Content Automation Protocol (SCAP).

National Cyber Awareness System

Vulnerability Summary for CVE-2014-3511

Original release date: 08/13/2014
Last revised: 10/24/2014
Source: US-CERT/NIST

Overview

The ssl23_get_client_hello function in s23_srvr.c in OpenSSL 1.0.1 before 1.0.1i allows man-in-the-middle attackers to force the use of TLS 1.0 by triggering ClientHello message fragmentation in communication between a client and server that both support later TLS versions, related to a "protocol downgrade" issue.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 4.3 (MEDIUM) (AV:N/AC:M/Au:N/C:N/I:P/A:N) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable; Victim must voluntarily interact with attack mechanism
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized modification

References to Advisories, Solutions, and Tools

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External Source: CONFIRM
Name: http://www.tenable.com/security/tns-2014-06
External Source: SECUNIA
Name: 60377
External Source: SECUNIA
Name: 60938
External Source: SECUNIA
Name: 60921
External Source: SECUNIA
Name: 60917
External Source: SUSE
Name: openSUSE-SU-2014:1052
External Source: SECUNIA
Name: 60890
External Source: CONFIRM
Name: http://www.splunk.com/view/SP-CAAANHS
External Source: CONFIRM
Name: https://www.openssl.org/news/secadv_20140806.txt
Type: Advisory
External Source: DEBIAN
Name: DSA-2998
External Source: SECUNIA
Name: 60810
External Source: CONFIRM
Name: http://www.arubanetworks.com/support/alerts/aid-08182014.txt
External Source: SECUNIA
Name: 59887
External Source: NETBSD
Name: NetBSD-SA2014-008
External Source: CONFIRM
Name: https://kc.mcafee.com/corporate/index?page=content&id=SB10084
External Source: CONFIRM
Name: https://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=280b1f1ad12131defcd986676a8fc9717aaa601b
External Source: CONFIRM
Name: http://aix.software.ibm.com/aix/efixes/security/openssl_advisory10.asc

Technical Details

Vulnerability Type (View All)