Common Vulnerabilities and Exposures assigned an identifier CVE-2009-1378 to the following vulnerability: In dtls1_process_out_of_seq_message() the check if the current message is already buffered was missing. For every new message was memory allocated, allowing an attacker to perform an denial of service attack with sending out of seq handshake messages until there is no memory left. Additionally every future messege was buffered, even if the sequence number made no sense and would be part of another handshake. So only messages with sequence numbers less than 10 in advance will be buffered. http://rt.openssl.org/Ticket/Display.html?id=1931&user=guest&pass=guest http://marc.info/?t=124250665500033&r=1&w=2 http://cvs.openssl.org/chngview?cn=18190 but reverted for 0.9.8 http://cvs.openssl.org/chngview?cn=18200
CVE-2009-1378: Multiple memory leaks in the dtls1_process_out_of_seq_message function in ssl/d1_both.c in OpenSSL 0.9.8k and earlier 0.9.8 versions allow remote attackers to cause a denial of service (memory consumption) via DTLS records that (1) are duplicates or (2) have sequence numbers much greater than current sequence numbers, aka "DTLS fragment handling memory leak." References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1378 http://marc.info/?l=openssl-dev&m=124247679213944&w=2 http://marc.info/?l=openssl-dev&m=124263491424212&w=2 http://www.openwall.com/lists/oss-security/2009/05/18/1 https://launchpad.net/bugs/cve/2009-1378 http://cvs.openssl.org/chngview?cn=18188 http://rt.openssl.org/Ticket/Display.html?id=1931&user=guest&pass=guest http://www.securityfocus.com/bid/35001 http://secunia.com/advisories/35128
openssl-0.9.8g-14.fc10 has been submitted as an update for Fedora 10. http://admin.fedoraproject.org/updates/openssl-0.9.8g-14.fc10
openssl-0.9.8g-9.14.fc9 has been submitted as an update for Fedora 9. http://admin.fedoraproject.org/updates/openssl-0.9.8g-9.14.fc9
openssl-0.9.8k-5.fc11 has been submitted as an update for Fedora 11. http://admin.fedoraproject.org/updates/openssl-0.9.8k-5.fc11
This issue did not affect versions of openssl as shipped in Red Hat Enterprise Linux 3 and 4. This issue affects openssl version as shipped in Red Hat Enterprise Linux 5 and it will be addressed in the openssl packages update in Red Hat Enterprise Linux 5.4. There is no update planned before than, as both DTLS specification and OpenSSL's implementation is still in development and unlikely to be used in production environments. There is no component shipped in Red Hat Enterprise Linux 5 using OpenSSL's DTLS implementation, except for OpenSSL's testing command line client - openssl.
openssl-0.9.8g-14.fc10 has been pushed to the Fedora 10 stable repository. If problems still persist, please make note of it in this bug report.
openssl-0.9.8g-9.14.fc9 has been pushed to the Fedora 9 stable repository. If problems still persist, please make note of it in this bug report.
openssl-0.9.8k-5.fc11 has been pushed to the Fedora 11 stable repository. If problems still persist, please make note of it in this bug report.
This issue has been addressed in following products: Red Hat Enterprise Linux 5 Via RHSA-2009:1335 https://rhn.redhat.com/errata/RHSA-2009-1335.html