36 matches found
SUSE CVE-2026-42770
Issue summary: When EVPPKEYderivesetpeer is called with a DHX X9.42 peer key, the peer key is not properly checked for the subgroup membership. Impact summary: A malicious peer which presents an X9.42 key carrying the victim's p and g parameters, a forged q = r a small prime factor of the cofacto...
EUVD-2026-35487
Issue summary: When EVPPKEYderivesetpeer is called with a DHX X9.42 peer key, the peer key is not properly checked for the subgroup membership. Impact summary: A malicious peer which presents an X9.42 key carrying the victim's p and g parameters, a forged q = r a small prime factor of the cofacto...
CVE-2026-42770
CVE-2026-42770 affects OpenSSL FIPS modules (4.0, 3.6, 3.5, 3.4, 3.0) and related deployments using EVP_PKEY_derive_set_peer() with DHX/X9.42 keys. The vulnerability arises when the subgroup check Y^q ≡ 1 (mod p) uses the peer’s q instead of the local key’s q, allowing a malicious X9.42 peer to c...
CVE-2026-42770
Issue summary: When EVPPKEYderivesetpeer is called with a DHX X9.42 peer key, the peer key is not properly checked for the subgroup membership. Impact summary: A malicious peer which presents an X9.42 key carrying the victim's p and g parameters, a forged q = r a small prime factor of the cofacto...
CVE-2026-42770 FFC-DH Peer Validation Uses Attacker-Supplied q
Issue summary: When EVPPKEYderivesetpeer is called with a DHX X9.42 peer key, the peer key is not properly checked for the subgroup membership. Impact summary: A malicious peer which presents an X9.42 key carrying the victim's p and g parameters, a forged q = r a small prime factor of the cofacto...
CVE-2026-42770
Issue summary: When EVPPKEYderivesetpeer is called with a DHX X9.42 peer key, the peer key is not properly checked for the subgroup membership. Impact summary: A malicious peer which presents an X9.42 key carrying the victim's p and g parameters, a forged q = r a small prime factor of the cofacto...
PT-2026-47840
Name of the Vulnerable Software and Affected Versions OpenSSL FIPS modules versions 3.0, 3.4, 3.5, 3.6, and 4.0 Description When the EVP PKEY derive set peer function is called with a DHX X9.42 peer key, the software fails to properly verify subgroup membership. Specifically, the check Y^q ≡ 1 mo...
RHEL 9 : fence-agents (RHSA-2026:22330)
The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:22330 advisory. The fence-agents packages provide a collection of scripts for handling remote power management for cluster devices. They allow failed or...
cryptography: cryptography Subgroup Attack Due to Missing Subgroup Validation for SECT Curves
A validation flaw has been discovered in the python cryptography package. This missing validation allows an attacker to provide a public key point P from a small-order subgroup. This can lead to security issues in various situations, such as the most commonly used signature verification ECDSA and...
Important: Red Hat Security Advisory: fence-agents security update
An update for fence-agents is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability...
USN-8087-3: python-cryptography vulnerability
USN-8087-1 fixed a vulnerability in python-cryptography. This update provides the corresponding update to Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. Original advisory details: It was discovered that python-cryptography incorrectly handled subgroup validation for SECT curves. A remo...
USN-8087-3 python-cryptography vulnerability
USN-8087-1 fixed a vulnerability in python-cryptography. This update provides the corresponding update to Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. Original advisory details: It was discovered that python-cryptography incorrectly handled subgroup validation for SECT curves. A remo...
Ubuntu: Security Advisory (USN-8087-2)
The remote host is missing an update for the SPDX-FileCopyrightText: 2026 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...
USN-8087-2 python-cryptography regression
USN-8087-1 fixed a vulnerability in python-cryptography. The update caused a regression when using ECC algorithms with certain software. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that python-cryptography incorrectly handled...
Ubuntu: Security Advisory (USN-8087-1)
The remote host is missing an update for the SPDX-FileCopyrightText: 2026 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...
Ubuntu 22.04 LTS / 24.04 LTS / 25.10 : python-cryptography vulnerability (USN-8087-1)
The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 host has a package installed that is affected by a vulnerability as referenced in the USN-8087-1 advisory. It was discovered that python-cryptography incorrectly handled subgroup validation for SECT curves. A remote attacker could use this issue to...
Subgroup Attack
cryptography is vulnerable to a Subgroup Attack. The vulnerability is due to missing validation of the point belonging to the expected prime-order subgroup of the curve, where an attacker can provide a public key point P from a small-order subgroup and this can lead to security issues in various...
cryptography Vulnerable to a Subgroup Attack Due to Missing Subgroup Validation for SECT Curves
Vulnerability Summary The publickeyfromnumbers or EllipticCurvePublicNumbers.publickey, EllipticCurvePublicNumbers.publickey, loadderpublickey and loadpempublickey functions do not verify that the point belongs to the expected prime-order subgroup of the curve. This missing validation allows an...
GHSA-R6PH-V2QM-Q3C2 cryptography Vulnerable to a Subgroup Attack Due to Missing Subgroup Validation for SECT Curves
Vulnerability Summary The publickeyfromnumbers or EllipticCurvePublicNumbers.publickey, EllipticCurvePublicNumbers.publickey, loadderpublickey and loadpempublickey functions do not verify that the point belongs to the expected prime-order subgroup of the curve. This missing validation allows an...