RSA key reconstruction vulnerability

Overview

Various implementations of RSA may contain a vulnerability that could allow an attacker to retrieve encryption keys.

Description

Some implementations of RSA may contain a vulnerability that could allow a local attacker to retrieve encryption keys.

OpenSSL is a widely used open source implementation of the SSL and TLS protocols. OpenSSL is based on the SSLeay library. OpenSSL provides support for the RSA encryption algorithm. Note that vendors may include a vulnerable version of OpenSSL in web servers, VPN, or other products.

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Impact

An attacker could possibly decrypt messages that were encrypted with OpenSSL using RSA algorithm.

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Solution

Apply a patch
OpenSSL has released a patch to address this issue. See <http://openssl.org/news/patch-CVE-2007-3108.txt&gt; for more details. See the systems affected portion of this document for a partial list of other vendors who may be affected.

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Vendor Information

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OpenSSL __ Affected

Updated: August 02, 2007

Status

Affected

Vendor Statement

The paper describes another example of a side-channel attack, not specific to OpenSSL, where an untrusted local user may be able to discover private key material that is in use on that system

(CVE-2007-3108).

The OpenSSL team have made the following patch available for OpenSSL 0.9.8 that can mitigate this issue. This patch will be part of a future release (although no new release is currently planned).

<http://openssl.org/news/patch-CVE-2007-3108.txt&gt;

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

America Online, Inc. Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Apache HTTP Server Project Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Apache-SSL Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Apple Computer, Inc. Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Aruba Networks, Inc. Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

AttachmateWRQ, Inc. Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Certicom Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Conectiva Inc. Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Covalent Technologies Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Cray Inc. Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Cryptlib __ Unknown

Notified: June 28, 2007 Updated: August 02, 2007

Status

Unknown

Vendor Statement

This Vulnerability Note addresses a covert channel issue that represents one particular instance of a large class of side-channel attacks made possible by certain architectural features of modern CPUs. While it’s possible to (probably) work around this one instance, the only fully effective solution that will work against current as well as future attacks of this kind is to not place sensitive data or data-dependent code flow in a position where side- channel attacks are possible. The cryptlib documentation contains guidance on doing this in the section “Safeguarding Cryptographic Operations”.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Crypto++ Library Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Debian GNU/Linux Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

EMC Corporation Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Engarde Secure Linux Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

F-Secure Corporation Unknown

Notified: July 31, 2007 Updated: July 31, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

F5 Networks, Inc. Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Fedora Project Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

FreeBSD, Inc. Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Fujitsu Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Gentoo Linux Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Hewlett-Packard Company Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Hitachi Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

IAIK Java Group Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

IBM Corporation Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

IBM Corporation (zseries) Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

IBM eServer Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Immunix Communications, Inc. Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Ingrian Networks, Inc. Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Juniper Networks, Inc. Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Lotus Software Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Mandriva, Inc. Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Microsoft Corporation Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Mirapoint, Inc. Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

MontaVista Software, Inc. Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Mozilla Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

NEC Corporation Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

NetBSD Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Netscape NSS Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Nokia Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Novell, Inc. Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

OpenBSD Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

OpenSSH Unknown

Notified: August 13, 2007 Updated: August 13, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Openwall GNU/*/Linux Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

QNX, Software Systems, Inc. Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

RSA Security, Inc. Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Red Hat, Inc. Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

SUSE Linux Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Secure Computing Network Security Division Unknown

Notified: August 27, 2007 Updated: August 27, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Silicon Graphics, Inc. Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Slackware Linux Inc. Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Sony Corporation Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Spyrus Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Stunnel Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Sun Microsystems, Inc. Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

The SCO Group Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Trustix Secure Linux Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Turbolinux Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Ubuntu Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Unisys Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Wind River Systems, Inc. Unknown

Notified: August 01, 2007 Updated: August 01, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

lsh Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

mod_ssl Unknown

Notified: June 28, 2007 Updated: June 28, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

View all 64 vendors __View less vendors __

CVSS Metrics

Group	Score	Vector
Base	0	AV:–/AC:–/Au:–/C:–/I:–/A:–
Temporal	0	E:ND/RL:ND/RC:ND
Environmental	0	CDP:ND/TD:ND/CR:ND/IR:ND/AR:ND

References

• <http://openssl.org/news/patch-CVE-2007-3108.txt&gt;
• <http://cvs.openssl.org/chngview?cn=16275&gt;
• <http://www.openssl.org/docs/apps/rsa.html#&gt;
• <http://en.wikipedia.org/wiki/Rsa&gt;

Acknowledgements

Thanks to Dr. Onur Aciicmez, Samsung Information Systems America, Samsung Electronics R&D Center, USA, and Prof. Werner Schindler, Bundesamt für Sicherheit in der Informationstechnik (BSI), Germany for reporting this vulnerability.

This document was written by Ryan Giobbi.

Other Information

CVE IDs:	CVE-2007-3108
Severity Metric:	1.77 Date Public: