Astra Linux – Vulnerability in openssl, edk2

Issue summary: A timing side-channel that could potentially allow the recovery of the private key exists in the ECDSA signature computation. Impact summary: A timing side-channel in ECDSA signature computations could allow an attacker to recover the private key. However, measuring the timing woul...

OESA-2025-1287 compat-openssl11 security update

OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security TLS and Secure Sockets Layer SSL protocols. Security Fixes: Issue summary: A timing side-channel which could potentially allow recovering the private key exists in the ECDSA signature computation...

openSUSE Security Advisory (openSUSE-SU-2024:0111-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2024 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...

PuTTY and embedders (f.i., filezilla) -- biased RNG with NIST P521/ecdsa-sha2-nistp521 signatures permits recovering private key

Simon Tatham reports: ECDSA signatures using 521-bit keys the NIST P521 curve, otherwise known as ecdsa-sha2-nistp521 were generated with biased random numbers. This permits an attacker in possession of a few dozen signatures to RECOVER THE PRIVATE KEY. Any 521-bit ECDSA private key that PuTTY or...