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Category:   Application (VPN)  >   OpenSSL Vendors:   OpenSSL.org
OpenSSL DTLS Retransmission Error May Let Remote Users Deny Service
SecurityTracker Alert ID:  1029549
SecurityTracker URL:  http://securitytracker.com/id/1029549
CVE Reference:   CVE-2013-6450   (Links to External Site)
Updated:  Jan 7 2014
Original Entry Date:  Jan 1 2014
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.0 - 1.0.1e
Description:   A vulnerability was reported in OpenSSL. A remote user can cause denial of service conditions.

The DTLS retransmission implementation does not properly maintain data structures for digest and encryption contexts. A remote user conducting a man-in-the-middle attack or a remote server may be able to trigger the use of a different context and cause the target client to crash.

Dmitry Sobinov reported this vulnerability.

Impact:   A remote user may be able to conduct man-in-the-middle attacks to deny service.
Solution:   The vendor has issued a fix (1.0.0l, 1.0.1f).

The source code fix is also available at:

http://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=34628967f1e65dc8f34e000f0f5518e21afbfc7b

Vendor URL:  www.openssl.org/ (Links to External Site)
Cause:   State error
Underlying OS:   Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jan 8 2014 (Red Hat Issues Fix) OpenSSL DTLS Retransmission Error May Let Remote Users Deny Service   (bugzilla@redhat.com)
Red Hat has issued a fix for Red Hat Enterprise Linux 6.
Jan 15 2014 (FreeBSD Issues Fix) OpenSSL DTLS Retransmission Error May Let Remote Users Deny Service   (FreeBSD Security Advisories <security-advisories@freebsd.org>)
FreeBSD has issued a fix for 10.0-PRERELEASE.
Feb 1 2014 (Puppet Labs Issues Fix for Puppet Enterprise) OpenSSL DTLS Retransmission Error May Let Remote Users Deny Service
Puppet Labs has issued a fix for Puppet Enterprise.
Feb 26 2014 (IBM Issues Fix for IBM AIX) OpenSSL DTLS Retransmission Error May Let Remote Users Deny Service
IBM has issued a fix for IBM AIX 5.3, 6.1, and 7.1.
Jun 27 2014 (Oracle Issues Fix for Solaris) OpenSSL DTLS Retransmission Error May Let Remote Users Deny Service
Oracle has issued a fix for Solaris 11.1.



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