Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: libssh (UTSA-2025-990912)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-990912 advisory. A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange KEX process, an allocation failure in...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: libssh (UTSA-2025-990926)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-990926 advisory. A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange KEX process, an allocation failure in...

Siemens SIMATIC S7-1500 Observable Discrepancy (CVE-2023-5981)

A vulnerability was found that the response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from response times of ciphertexts with correct PKCS1 v1.5 padding. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information...

Siemens SIMATIC S7-1500 Observable Discrepancy (CVE-2023-0361)

A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS. This side-channel can be sufficient to recover the key encrypted in the RSA ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption the attacker would need to...

Siemens SIMATIC S7-1500 Double Free (CVE-2023-25136)

OpenSSH server sshd 9.1 introduced a double-free vulnerability during options.kexalgorithms handling. This is fixed in OpenSSH 9.2. The double free can be leveraged, by an unauthenticated remote attacker in the default configuration, to jump to any location in the sshd address space. One...

EulerOS 2.0 SP12 : libssh (EulerOS-SA-2025-2363)

According to the versions of the libssh package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the sshkdf function responsible for key derivation...

EulerOS 2.0 SP10 : libssh (EulerOS-SA-2025-2392)

According to the versions of the libssh package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : There's a vulnerability in the libssh package where when a libssh consumer passes in an unexpectedly large input buffer to sshgetfingerprinthash...

Amazon Linux 2023 : libssh, libssh-config, libssh-devel (ALAS2023-2025-1264)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1264 advisory. NULL Pointer Dereference vulnerability in the session ID calculation logic of the libssh library. The flaw arises from improper handling of allocation errors during cryptographic operations in...

Medium: libssh

Issue Overview: NULL Pointer Dereference vulnerability in the session ID calculation logic of the libssh library. The flaw arises from improper handling of allocation errors during cryptographic operations in the key exchange KEX phase. If a memory allocation fails, the resulting NULL pointer may...

Key Exchange without Entity Authentication

Overview Affected versions of this package are vulnerable to Key Exchange without Entity Authentication in the SFTP implementation in the wolfSSH backend. An attacker can intercept or manipulate data in transit by performing a man-in-the-middle attack. Note: This issue affects only users that bui...

Ubuntu: Security Advisory (USN-7849-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2025 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 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 / 25.10 : libssh vulnerability (USN-7849-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 / 25.10 host has packages installed that are affected by a vulnerability as referenced in the USN-7849-1 advisory. Philippe Antoine discovered that libssh did not properly manage memory when calculating a session ...

USN-7849-1: libssh vulnerability

Philippe Antoine discovered that libssh did not properly manage memory when calculating a session id during the key exchange process. An attacker could possibly use this issue to cause libssh to crash, resulting in a denial of service...

USN-7849-1 libssh vulnerability

Philippe Antoine discovered that libssh did not properly manage memory when calculating a session id during the key exchange process. An attacker could possibly use this issue to cause libssh to crash, resulting in a denial of service...

SUSE SLES12 Security Update : libssh (SUSE-SU-2025:3897-1)

The remote SUSE Linux SLES12 host has a package installed that is affected by a vulnerability as referenced in the SUSE- SU-2025:3897-1 advisory. - CVE-2025-8277: memory exhaustion leading to client-side DoS due to improper memory management when KEX process is repeated with incorrect guesses...

SUSE-SU-2025:3897-1 Security update for libssh

This update for libssh fixes the following issues: - CVE-2025-8277: memory exhaustion leading to client-side DoS due to improper memory management when KEX process is repeated with incorrect guesses bsc1249375...

SUSE SLES12 Security Update : chrony (SUSE-SU-2025:3868-1)

The remote SUSE Linux SLES12 host has a package installed that is affected by a vulnerability as referenced in the SUSE- SU-2025:3868-1 advisory. Security issues fixed: - Race condition during socket creation by chronyc allows privilege escalation from user chrony to root bsc1246544. Other issues...

Security update for chrony

This update for chrony fixes the following issues: Security issues fixed: - Race condition during socket creation by chronyc allows privilege escalation from user chrony to root bsc1246544. Other issues fixed: - Improve connection retry intervals when facing NTS-KE related issues bsc1213551. nts:...

PQC Key Exchange (KEX) Algorithm(s) Missing (SSH)

The remote SSH server is configured to NOT allow / support at least ONE Post-Quantum Cryptography PQC key exchange KEX algorithms. SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders...

PQC Key Exchange (KEX) Algorithm(s) Supported (SSH)

The remote SSH server is configured to allow / support at least ONE Post-Quantum Cryptography PQC key exchange KEX algorithms. SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders...