buffer size confusion

Description an attempt to write 2000 into a buffer of 10 bytes, while SSLread does not add a zero at the end. Proof of Concept cpp define BUFFSIZE 2000 ... char buf10; SSLreadssl,buf,BUFFSIZE; int virtualIP = atoibuf;...

Huawei EulerOS: Security Advisory for openssl (EulerOS-SA-2018-1179)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2020 Greenbone AG 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 ifdescription...

Amazon Linux AMI : openssl (ALAS-2018-1016)

There is an overflow bug in the AVX2 Montgomery multiplication procedure used in exponentiation with 1024-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believed likely. Attack...

Medium: openssl

Issue Overview: There is an overflow bug in the AVX2 Montgomery multiplication procedure used in exponentiation with 1024-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believe...

BSA-2018-527

Summary OpenSSL 1.0.2 starting from version 1.0.2b introduced an "error state" mechanism. The intent was that if a fatal error occurred during a handshake then OpenSSL would move into the error state and would immediately fail if you attempted to continue the handshake. This works as designed for...

An Analysis of the OpenSSL SSL Handshake Error State Security Bypass (CVE-2017-3737)

OpenSSL is a widely used library for SSL and TLS protocol implementation that secures data using encryption and decryption based on cryptographic functions. However, a Security Bypass vulnerability – recently addressed in a patch by the OpenSSL Project –can be exploited to make vulnerable SSL...

Design/Logic Flaw

Node.js was affected by OpenSSL vulnerability CVE-2017-3737 in regards to the use of SSLread due to TLS handshake failure. The result was that an active network attacker could send application data to Node.js using the TLS or HTTP2 modules in a way that bypassed TLS authentication and encryption...

CVE-2017-15896

Node.js was affected by OpenSSL vulnerability CVE-2017-3737 in regards to the use of SSLread due to TLS handshake failure. The result was that an active network attacker could send application data to Node.js using the TLS or HTTP2 modules in a way that bypassed TLS authentication and encryption...

CVE-2017-15896

Node.js was affected by OpenSSL vulnerability CVE-2017-3737 in regards to the use of SSLread due to TLS handshake failure. The result was that an active network attacker could send application data to Node.js using the TLS or HTTP2 modules in a way that bypassed TLS authentication and encryption...

FreeBSD -- OpenSSL multiple vulnerabilities

Problem Description: Invoking SSLread/SSLwrite while in an error state causes data to be passed without being decrypted/encrypted directly from the SSL/TLS record layer. In order to exploit this issue an application bug would have to be present that resulted in a call to SSLread/SSLwrite being...

CVE-2017-3737

OpenSSL 1.0.2 starting from version 1.0.2b introduced an "error state" mechanism. The intent was that if a fatal error occurred during a handshake then OpenSSL would move into the error state and would immediately fail if you attempted to continue the handshake. This works as designed for the...

CVE-2017-3737

OpenSSL 1.0.2 starting from version 1.0.2b introduced an "error state" mechanism. The intent was that if a fatal error occurred during a handshake then OpenSSL would move into the error state and would immediately fail if you attempted to continue the handshake. This works as designed for the...

Design/Logic Flaw

OpenSSL 1.0.2 starting from version 1.0.2b introduced an "error state" mechanism. The intent was that if a fatal error occurred during a handshake then OpenSSL would move into the error state and would immediately fail if you attempted to continue the handshake. This works as designed for the...

CVE-2017-3737

OpenSSL 1.0.2 starting from version 1.0.2b introduced an "error state" mechanism. The intent was that if a fatal error occurred during a handshake then OpenSSL would move into the error state and would immediately fail if you attempted to continue the handshake. This works as designed for the...

CVE-2017-3737

OpenSSL 1.0.2 introduced an error state for fatal handshake errors. A bug causes SSL_read()/SSL_write() to bypass decryption/encryption if called after a fatal error, allowing data to pass without proper TLS processing. Affected: OpenSSL 1.0.2b–1.0.2m (including 1.0.2k/1.0.2n fixes noted). OpenSS...

CVE-2017-3737

OpenSSL 1.0.2 starting from version 1.0.2b introduced an "error state" mechanism. The intent was that if a fatal error occurred during a handshake then OpenSSL would move into the error state and would immediately fail if you attempted to continue the handshake. This works as designed for the...