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

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 ...

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...

CVE-2006-4339: Undefined Security Weakness

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...

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...

CVE-2006-0584

CVE-2006-0584 affects PeopleSoft People Tools 8.4x where the PSCipher function uses PKCS #5 with a fixed DES key to store passwords. This enables local attackers to perform dictionary-style guessing by comparing output strings. The provided documents describe the root cause (fixed DES key) and im...

CVE-2006-0584

The PSCipher function in PeopleSoft People Tools 8.4x uses PKCS 5 with a fixed DES key to store user passwords, which makes it easier for local users to guess passwords using a dictionary attack that compares output strings...

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...

CVE-2002-1446

The CVE-2002-1446 entry concerns the nCipher PKCS#11 library (version 1.2.0 and later). The C_Verify error checking routine for a symmetric verification key can return CKR_OK even when it detects an invalid signature, creating a vulnerability where remote attackers could modify or forge messages....

CVE-2002-1446: Undefined Security Weakness

The error checking routine used for the CVerify call on a symmetric verification key in the nCipher PKCS11 library 1.2.0 and later returns the CKROK status even when it detects an invalid signature, which could allow remote attackers to modify or forge messages...

CVE-2004-0590

The CVE-2004-0590 entry affects FreeS/WAN and related IPsec implementations (OpenS/WAN, FreeS/WAN derivatives, Super-FreeS/WAN, and strongSwan). The root cause described across connected docs is bugs in the verify_x509cert() certificate validation, allowing remote attackers to authenticate using ...

CVE-2004-0590: Undefined Security Weakness

FreeS/WAN 1.x and 2.x, and other related products including superfreeswan 1.x, openswan 1.x before 1.0.6, openswan 2.x before 2.1.4, and strongSwan before 2.1.3, allows remote attackers to authenticate using spoofed PKCS7 certificates in which a self-signed certificate identifies an alternate...

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...