596 matches found
Important: Red Hat Security Advisory: openssl security update
Updated OpenSSL packages are now available to correct a security issue. This update has been rated as having important security impact by the Red Hat Security Response Team. The OpenSSL toolkit provides support for secure communications between machines. OpenSSL includes a certificate management...
openssl -- Incorrect PKCS#1 v1.5 padding validation in crypto(3)
Problem Description When verifying a PKCS1 v1.5 signature, OpenSSL ignores any bytes which follow the cryptographic hash being signed. In a valid signature there will be no such bytes. Impact OpenSSL will incorrectly report some invalid signatures as valid. When an RSA public exponent of 3 is use...
FreeBSD-SA-06:19.openssl
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ============================================================================= FreeBSD-SA-06:19.openssl Security Advisory The FreeBSD Project Topic: Incorrect PKCS1 v1.5 padding validation in crypto3 Category: contrib Module: openssl Announced:...
USN-339-1: OpenSSL vulnerability
Philip Mackenzie, Marius Schilder, Jason Waddle and Ben Laurie of Google Security discovered that the OpenSSL library did not sufficiently check the padding of PKCS 1 v1.5 signatures if the exponent of the public key is 3 which is widely used for CAs. This could be exploited to forge signatures...
OpenSSL RSA Signature Forgery Vulnerability
OpenSSL versions 0.9.7j and prior and 0.9.8b and prior contain a vulnerability that could allow an unauthenticated, remote attacker to successfully pass a forged X.509 certificate. The vulnerability could allow an unauthenticated, remote attacker to pass a forged Public-Key Cryptography Standards...
CVE-2006-4339
OpenSSL before 0.9.7, 0.9.7 before 0.9.7k, and 0.9.8 before 0.9.8c, when using an RSA key with exponent 3, removes PKCS-1 padding before generating a hash, which allows remote attackers to forge a PKCS 1 v1.5 signature that is signed by that RSA key and prevents OpenSSL from correctly verifying...
CVE-2006-4339
OpenSSL before 0.9.7, 0.9.7 before 0.9.7k, and 0.9.8 before 0.9.8c, when using an RSA key with exponent 3, removes PKCS-1 padding before generating a hash, which allows remote attackers to forge a PKCS 1 v1.5 signature that is signed by that RSA key and prevents OpenSSL from correctly verifying...
CVE-2006-4339
CVE-2006-4339 affects OpenSSL versions prior to 0.9.7 and 0.9.8 before patches (0.9.7k, 0.9.8c) where using an RSA key with exponent 3 causes PKCS#1 padding to be removed before hash generation. This enables remote attackers to forge a PKCS#1 v1.5 signature signed by that RSA key and can prevent ...
CVE-2006-4339
OpenSSL before 0.9.7, 0.9.7 before 0.9.7k, and 0.9.8 before 0.9.8c, when using an RSA key with exponent 3, removes PKCS-1 padding before generating a hash, which allows remote attackers to forge a PKCS 1 v1.5 signature that is signed by that RSA key and prevents OpenSSL from correctly verifying...
Vulnerability in OpenSSL - RSA Signature Forgery
Daniel Bleichenbacher discovered an attack on PKCS 1 v1.5 signatures where under certain circumstances it may be possible for an attacker to forge a PKCS 1 v1.5 signature that would be incorrectly verified by OpenSSL...
OpenSSL Security Advisory [5th September 2006] RSA Signature Forgery (CVE-2006-4339)
OpenSSL Security Advisory 5th September 2006 RSA Signature Forgery CVE-2006-4339 ===================================== Vulnerability ------------- Daniel Bleichenbacher recently described an attack on PKCS 1 v1.5 signatures. If an RSA key with exponent 3 is used it may be possible to forge a PKCS...
SSH PKCS #1 Version 1.5 Session Key Retrieval Vulnerability
Implementations of SSH version 1.5 are prone to a session key retrieval vulnerability. SPDX-FileCopyrightText: 2003 Xue Yong Zhi Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only...
SSL/TLS implementations disclose side channel information via PKCS #1 v1.5 version number extension
Overview SSL/TLS implementations that respond distinctively to an incorrect PKCS 1 v1.5 encoded SSL/TLS version number expose the premaster secret to a modified Bleichenbacher attack. An attacker could decrypt a given SSL/TLS session or forge a signature on behalf of a vulnerable application's...
CVE-2001-0361
Implementations of SSH version 1.5, including 1 OpenSSH up to version 2.3.0, 2 AppGate, and 3 ssh-1 up to version 1.2.31, in certain configurations, allow a remote attacker to decrypt and/or alter traffic via a "Bleichenbacher attack" on PKCS1 version 1.5...
CVE-2001-0361
CVE-2001-0361 affects SSH v1.5 implementations, notably OpenSSH up to 2.3.0, AppGate, and ssh-1 up to 1.2.31, when configured in certain ways. The issue enables a remote attacker to decrypt and/or alter traffic via a Bleichenbacher attack on PKCS#1 version 1.5. The connected PT security entries (...