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Category:   Application (Security)  >   OpenSSL Vendors:   OpenSSL.org
(NetBSD Issues Fix) OpenSSL DTLS Processing Bugs Let Users Deny Service
SecurityTracker Alert ID:  1022521
SecurityTracker URL:  http://securitytracker.com/id/1022521
CVE Reference:   CVE-2009-1377, CVE-2009-1378, CVE-2009-1379, CVE-2009-1386, CVE-2009-1387   (Links to External Site)
Date:  Jul 8 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:   NetBSD has issued a fix.

The fix will be included in version 5.0.1 and 5.1.

The NetBSD advisory is available at:

http://ftp.NetBSD.org/pub/NetBSD/security/advisories/NetBSD-SA2009-009.txt.asc

Vendor URL:  www.openssl.org/ (Links to External Site)
Cause:   Access control error, Resource error
Underlying OS:  UNIX (NetBSD)
Underlying OS Comments:  4.0.*, 5.0

Message History:   This archive entry is a follow-up to the message listed below.
May 18 2009 OpenSSL DTLS Processing Bugs Let Users Deny Service



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