CVSS: 4.8EPSS: 0%CPEs: 5EXPL: 0CVE-2023-6004 – Libssh: proxycommand/proxyjump features allow injection of malicious code through hostname
https://notcve.org/view.php?id=CVE-2023-6004
28 Dec 2023 — A flaw was found in libssh. By utilizing the ProxyCommand or ProxyJump feature, users can exploit unchecked hostname syntax on the client. This issue may allow an attacker to inject malicious code into the command of the features mentioned through the hostname parameter. Se encontró una falla en libssh. Al utilizar la función ProxyCommand o ProxyJump, los usuarios pueden explotar la sintaxis del hostname no verificada en el cliente. • https://access.redhat.com/errata/RHSA-2024:2504 • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') •
CVSS: 9.3EPSS: 0%CPEs: 6EXPL: 0CVE-2023-6918 – Libssh: missing checks for return values for digests
https://notcve.org/view.php?id=CVE-2023-6918
18 Dec 2023 — A flaw was found in the libssh implements abstract layer for message digest (MD) operations implemented by different supported crypto backends. The return values from these were not properly checked, which could cause low-memory situations failures, NULL dereferences, crashes, or usage of the uninitialized memory as an input for the KDF. In this case, non-matching keys will result in decryption/integrity failures, terminating the connection. Se encontró un fallo en la capa abstracta de implementación de lib... • https://access.redhat.com/errata/RHSA-2024:2504 • CWE-252: Unchecked Return Value •
CVSS: 5.9EPSS: 67%CPEs: 79EXPL: 3CVE-2023-48795 – ssh: Prefix truncation attack on Binary Packet Protocol (BPP)
https://notcve.org/view.php?id=CVE-2023-48795
18 Dec 2023 — The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phas... • https://packetstorm.news/files/id/176280 • CWE-222: Truncation of Security-relevant Information CWE-354: Improper Validation of Integrity Check Value •
CVSS: 6.8EPSS: 0%CPEs: 1EXPL: 0CVE-2023-3603 – Processing sftp server read may cause null dereference
https://notcve.org/view.php?id=CVE-2023-3603
21 Jul 2023 — A missing allocation check in sftp server processing read requests may cause a NULL dereference on low-memory conditions. The malicious client can request up to 4GB SFTP reads, causing allocation of up to 4GB buffers, which was not being checked for failure. This will likely crash the authenticated user's sftp server connection (if implemented as forking as recommended). For thread-based servers, this might also cause DoS for legitimate users. Given this code is not in any released versions, no security rel... • https://access.redhat.com/security/cve/CVE-2023-3603 • CWE-476: NULL Pointer Dereference •
CVSS: 6.8EPSS: 1%CPEs: 6EXPL: 0CVE-2023-1667 – libssh: NULL pointer dereference during rekeying with algorithm guessing
https://notcve.org/view.php?id=CVE-2023-1667
23 May 2023 — A NULL pointer dereference was found In libssh during re-keying with algorithm guessing. This issue may allow an authenticated client to cause a denial of service. Red Hat Advanced Cluster Management for Kubernetes 2.8.1 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and manage... • http://www.libssh.org/security/advisories/CVE-2023-1667.txt • CWE-476: NULL Pointer Dereference •
CVSS: 6.5EPSS: 0%CPEs: 5EXPL: 1CVE-2023-2283 – libssh: authorization bypass in pki_verify_data_signature
https://notcve.org/view.php?id=CVE-2023-2283
23 May 2023 — A vulnerability was found in libssh, where the authentication check of the connecting client can be bypassed in the`pki_verify_data_signature` function in memory allocation problems. This issue may happen if there is insufficient memory or the memory usage is limited. The problem is caused by the return value `rc,` which is initialized to SSH_ERROR and later rewritten to save the return value of the function call `pki_key_check_hash_compatible.` The value of the variable is not changed between this point an... • https://packetstorm.news/files/id/172861 • CWE-287: Improper Authentication •
CVSS: 6.5EPSS: 0%CPEs: 10EXPL: 0CVE-2021-3634 – libssh: possible heap-based buffer overflow when rekeying
https://notcve.org/view.php?id=CVE-2021-3634
26 Aug 2021 — A flaw has been found in libssh in versions prior to 0.9.6. The SSH protocol keeps track of two shared secrets during the lifetime of the session. One of them is called secret_hash and the other session_id. Initially, both of them are the same, but after key re-exchange, previous session_id is kept and used as an input to new secret_hash. Historically, both of these buffers had shared length variable, which worked as long as these buffers were same. • https://bugzilla.redhat.com/show_bug.cgi?id=1978810 • CWE-787: Out-of-bounds Write •
CVSS: 5.9EPSS: 3%CPEs: 8EXPL: 1CVE-2020-16135 – libssh: NULL pointer dereference in sftpserver.c if ssh_buffer_new returns NULL
https://notcve.org/view.php?id=CVE-2020-16135
29 Jul 2020 — libssh 0.9.4 has a NULL pointer dereference in tftpserver.c if ssh_buffer_new returns NULL. libssh versión 0.9.4, presenta una desreferencia del puntero NULL en el archivo tftpserver.c si la función ssh_buffer_new devuelve NULL A flaw was found in libssh. A NULL pointer dereference in tftpserver.c if ssh_buffer_new returns NULL. Red Hat Advanced Cluster Management for Kubernetes 2.2.10 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that admin... • https://bugs.libssh.org/T232 • CWE-476: NULL Pointer Dereference •
CVSS: 5.3EPSS: 0%CPEs: 9EXPL: 0CVE-2020-1730 – libssh: denial of service when handling AES-CTR (or DES) ciphers
https://notcve.org/view.php?id=CVE-2020-1730
09 Apr 2020 — A flaw was found in libssh versions before 0.8.9 and before 0.9.4 in the way it handled AES-CTR (or DES ciphers if enabled) ciphers. The server or client could crash when the connection hasn't been fully initialized and the system tries to cleanup the ciphers when closing the connection. The biggest threat from this vulnerability is system availability. Se detectó un fallo en libssh versiones anteriores a 0.8.9 y versiones anteriores a 0.9.4, en la manera en que se manejaron los cifrados AES-CTR (o DES si e... • https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1730 • CWE-476: NULL Pointer Dereference •
CVSS: 9.3EPSS: 0%CPEs: 11EXPL: 0CVE-2019-14889 – libssh: unsanitized location in scp could lead to unwanted command execution
https://notcve.org/view.php?id=CVE-2019-14889
10 Dec 2019 — A flaw was found with the libssh API function ssh_scp_new() in versions before 0.9.3 and before 0.8.8. When the libssh SCP client connects to a server, the scp command, which includes a user-provided path, is executed on the server-side. In case the library is used in a way where users can influence the third parameter of the function, it would become possible for an attacker to inject arbitrary commands, leading to a compromise of the remote target. Se detectó un fallo con la función ssh_scp_new() de la AP... • http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00033.html • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') •