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Category:   Application (Security)  >   OpenSSL Vendors:   OpenSSL.org
OpenSSL DTLS Processing Bugs Let Users Deny Service
SecurityTracker Alert ID:  1022241
SecurityTracker URL:  http://securitytracker.com/id/1022241
CVE Reference:   CVE-2009-1377, CVE-2009-1378, CVE-2009-1379, CVE-2009-1386, CVE-2009-1387   (Links to External Site)
Updated:  Jun 26 2009
Original Entry Date:  May 18 2009
Impact:   Denial of service via local system, Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.0.0 and prior versions
Description:   Several vulnerabilities were reported in OpenSSL. A user can cause denial of service conditions.

A user can send specially crafted DTLS records with a future epoch to consume excessive memory on the target system.

A user can send specially crafted DTLS messages to trigger a memory leak and consume excessive memory on the target system.

A user can send DTLS data with a specially crafted certificate to cause freed memory to be used by the dtls1_retrieve_buffered_fragment() function in 'ssl/d1_both.c'. OpenSSL 1.0.0 Beta 2 is affected.

Daniel Mentz reported the above listed vulnerabilities.

A remote user can send a DTLS ChangeCipherSpec packet prior to a ClientHello packet to trigger a null pointer dereference in 'ssl/s3_pkt.c' and cause the target daemon to crash.

A remote user can send an out-of-sequence DTLS handshake message to trigger a null pointer dereference in the dtls1_retrieve_buffered_fragment() function in 'ssl/d1_both.c' and cause the target daemon to crash.

Impact:   A user can consume excessive memory on the target system.

A user can cause an affected application to crash.

Solution:   The vendor has issued a source code fix.
Vendor URL:  www.openssl.org/ (Links to External Site)
Cause:   Access control error, Resource error
Underlying OS:   Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jun 30 2009 (IBM Issues Fix) OpenSSL DTLS Processing Bugs Let Users Deny Service
IBM has issued a fix for IBM AIX 5.2, 5.3, and 6.1.
Jul 8 2009 (NetBSD Issues Fix) OpenSSL DTLS Processing Bugs Let Users Deny Service
NetBSD has issued a fix for NetBSD 4.0.x and 5.0.
Sep 2 2009 (Red Hat Issues Fix) OpenSSL DTLS Processing Bugs Let Users Deny Service   (bugzilla@redhat.com)
Red Hat has released a fix for Red Hat Enterprise Linux 5.



 Source Message Contents

Date:  Mon, 18 May 2009 07:43:03 -0400
Subject:  OpenSSL


http://rt.openssl.org/Ticket/Display.html?id=1930
http://rt.openssl.org/Ticket/Display.html?id=1931
 
 


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