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CVE-2010-0433

Status Candidate

Overview

The kssl_keytab_is_available function in ssl/kssl.c in OpenSSL before 0.9.8n, when Kerberos is enabled but Kerberos configuration files cannot be opened, does not check a certain return value, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via SSL cipher negotiation, as demonstrated by a chroot installation of Dovecot or stunnel without Kerberos configuration files inside the chroot.

Related Files

VMware Security Advisory 2010-0015
Posted Sep 30, 2010
Authored by VMware | Site vmware.com

VMware Security Advisory 2010-0015 - ESX 4.0 Console OS (COS) updates for NSS_db, OpenLDAP, cURL, sudo OpenSSL, GnuTLS, NSS and NSPR packages.

tags | advisory
advisories | CVE-2009-2409, CVE-2009-3245, CVE-2009-3555, CVE-2009-3767, CVE-2010-0433, CVE-2010-0734, CVE-2010-0826, CVE-2010-1646
MD5 | 9f99f58fbdd8d777048475ace5b9e8a4
HP Security Bulletin HPSBUX02531 SSRT100108
Posted Jun 4, 2010
Authored by Hewlett Packard | Site hp.com

HP Security Bulletin - Potential security vulnerabilities have been identified with HP-UX running Apache-based Web Server. The vulnerabilities could be exploited remotely to cause a Denial of Service (DoS) or unauthorized access. Apache-based Web Server is contained in the Apache Web Server Suite.

tags | advisory, web, denial of service, vulnerability
systems | hpux
advisories | CVE-2009-3094, CVE-2009-3095, CVE-2010-0408, CVE-2010-0740, CVE-2010-0433, CVE-2010-0434
MD5 | 02bccf929a86d4929427f8186d511b97
Mandriva Linux Security Advisory 2010-076
Posted Apr 20, 2010
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2010-076 - The ssl3_get_record function in ssl/s3_pkt.c in OpenSSL 0.9.8f through 0.9.8m allows remote attackers to cause a denial of service (crash) via a malformed record in a TLS connection. OpenSSL before 0.9.8m does not check for a NULL return value from bn_wexpand function calls which has unspecified impact and context-dependent attack vectors. The kssl_keytab_is_available function in ssl/kssl.c in OpenSSL before 0.9.8n, when Kerberos is enabled but Kerberos configuration files cannot be opened, could allow remote attackers to cause a denial of service (NULL pointer dereference and daemon crash). Finally, this update provides support for secure renegotiation, preventing men-in-the-middle attacks. Packages for 2008.0 and 2009.0 are provided due to the Extended Maintenance Program for those products. Packages for 2009.0 are provided due to the Extended Maintenance Program.

tags | advisory, remote, denial of service
systems | linux, mandriva
advisories | CVE-2009-3555, CVE-2009-3245, CVE-2010-0740, CVE-2010-0433
MD5 | bbaee0f827d0bd92c66458587ca9c5d7
Mandriva Linux Security Advisory 2010-076
Posted Apr 19, 2010
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2010-076 - The ssl3_get_record function in ssl/s3_pkt.c in OpenSSL 0.9.8f through 0.9.8m allows remote attackers to cause a denial of service (crash) via a malformed record in a TLS connection. OpenSSL before 0.9.8m does not check for a NULL return value from bn_wexpand function calls which has unspecified impact and context-dependent attack vectors. The kssl_keytab_is_available function in ssl/kssl.c in OpenSSL before 0.9.8n, when Kerberos is enabled but Kerberos configuration files cannot be opened, could allow remote attackers to cause a denial of service (NULL pointer dereference and daemon crash). Finally, this update provides support for secure renegotiation, preventing men-in-the-middle attacks. Packages for 2008.0 and 2009.0 are provided due to the Extended Maintenance Program for those products.

tags | advisory, remote, denial of service
systems | linux, mandriva
advisories | CVE-2009-3555, CVE-2009-3245, CVE-2010-0740, CVE-2010-0433
MD5 | d807ffe9f3511e6ba382e0b0ad75d95f
HP Security Bulletin HPSBUX02517 SSRT100058
Posted Apr 15, 2010
Authored by Hewlett Packard | Site hp.com

HP Security Bulletin - Potential security vulnerabilities has been identified with HP-UX OpenSSL. These vulnerabilities could be exploited remotely for unauthorized information disclosure, unauthorized data modification, and to create a Denial of Service (DoS).

tags | advisory, denial of service, vulnerability, info disclosure
systems | hpux
advisories | CVE-2009-3245, CVE-2009-3555, CVE-2009-4355, CVE-2010-0433, CVE-2010-0740
MD5 | 77e589d6c79ad215aec9070fcc11b072
OpenSSL Toolkit 1.0.0
Posted Mar 31, 2010
Site openssl.org

OpenSSL is a robust, fully featured Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols with full-strength cryptography world-wide.

Changes: Connection renegotiation was vastly improved to overcome protocol weaknesses. A recently introduced "Record of death" vulnerability was resolved. A possible crash, reported as CVE-2010-0433, was fixed. Some memory leaks were resolved. Initial TLSv1.1 support was added. Handling of TLS versions 2.0 and later was improved, and the highest version is now selected. Support for MD2 has been deprecated. Support for companion-algorithm specific ASN1 signing routines was added. Signature dumping was improved. Many other improvements and minor bugfixes were made.
tags | encryption, protocol
advisories | CVE-2010-0433
MD5 | 89eaa86e25b2845f920ec00ae4c864ed
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