Vulnerability CVE-2014-3511
Published: 2014-08-13   Modified: 2014-08-14

Description:
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.

Type:

CWE-noinfo

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Openssl -> Openssl 

 References:
ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2014-008.txt.asc
http://aix.software.ibm.com/aix/efixes/security/openssl_advisory10.asc
http://linux.oracle.com/errata/ELSA-2014-1052.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136470.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136473.html
http://lists.opensuse.org/opensuse-updates/2014-08/msg00036.html
http://marc.info/?l=bugtraq&m=142350350616251&w=2
http://marc.info/?l=bugtraq&m=142495837901899&w=2
http://marc.info/?l=bugtraq&m=142624590206005&w=2
http://marc.info/?l=bugtraq&m=142660345230545&w=2
http://marc.info/?l=bugtraq&m=142791032306609&w=2
http://marc.info/?l=bugtraq&m=143290437727362&w=2
http://marc.info/?l=bugtraq&m=143290522027658&w=2
http://rhn.redhat.com/errata/RHSA-2015-0126.html
http://rhn.redhat.com/errata/RHSA-2015-0197.html
http://secunia.com/advisories/58962
http://secunia.com/advisories/59700
http://secunia.com/advisories/59710
http://secunia.com/advisories/60022
http://secunia.com/advisories/60221
http://secunia.com/advisories/60493
http://secunia.com/advisories/60684
http://secunia.com/advisories/60803
http://secunia.com/advisories/61017
http://secunia.com/advisories/61043
http://secunia.com/advisories/61100
http://secunia.com/advisories/61139
http://secunia.com/advisories/61184
http://security.gentoo.org/glsa/glsa-201412-39.xml
http://support.f5.com/kb/en-us/solutions/public/15000/500/sol15564.html
http://www-01.ibm.com/support/docview.wss?uid=nas8N1020240
http://www-01.ibm.com/support/docview.wss?uid=swg21682293
http://www-01.ibm.com/support/docview.wss?uid=swg21683389
http://www-01.ibm.com/support/docview.wss?uid=swg21686997
http://www.arubanetworks.com/support/alerts/aid-08182014.txt
http://www.debian.org/security/2014/dsa-2998
http://www.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-372998.htm
http://www.securityfocus.com/bid/69079
http://www.securitytracker.com/id/1030693
http://www.splunk.com/view/SP-CAAANHS
http://www.tenable.com/security/tns-2014-06
https://bugzilla.redhat.com/show_bug.cgi?id=1127504
https://exchange.xforce.ibmcloud.com/vulnerabilities/95162
https://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=280b1f1ad12131defcd986676a8fc9717aaa601b
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150888
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380
https://kc.mcafee.com/corporate/index?page=content&id=SB10084
https://lists.balabit.hu/pipermail/syslog-ng-announce/2014-September/000196.html
https://support.citrix.com/article/CTX216642
https://techzone.ergon.ch/CVE-2014-3511
https://www.freebsd.org/security/advisories/FreeBSD-SA-14:18.openssl.asc
https://www.openssl.org/news/secadv_20140806.txt
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