Product:

Libssh

(Libssh)
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This might be proprietary software.
#Vulnerabilities 21
Date Id Summary Products Score Patch Annotated
2023-05-26 CVE-2023-2283 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... Fedora, Libssh, Enterprise_linux 6.5
2021-08-31 CVE-2021-3634 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. But the key re-exchange operation can also... Debian_linux, Fedora, Libssh, Cloud_backup, Mysql_workbench, Enterprise_linux, Virtualization 6.5
2023-05-26 CVE-2023-1667 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. Debian_linux, Fedora, Libssh, Enterprise_linux 6.5
2019-12-10 CVE-2019-14889 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. Ubuntu_linux, Debian_linux, Fedora, Libssh, Leap, Mysql_workbench 8.8
2020-04-13 CVE-2020-1730 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. Ubuntu_linux, Fedora, Libssh, Cloud_backup, Mysql_workbench, Enterprise_linux 5.3
2020-07-29 CVE-2020-16135 libssh 0.9.4 has a NULL pointer dereference in tftpserver.c if ssh_buffer_new returns NULL. Ubuntu_linux, Debian_linux, Fedora, Libssh, Communications_cloud_native_core_policy 5.9
2023-07-21 CVE-2023-3603 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... Libssh 6.5
2018-10-17 CVE-2018-10933 A vulnerability was found in libssh's server-side state machine before versions 0.7.6 and 0.8.4. A malicious client could create channels without first performing authentication, resulting in unauthorized access. Ubuntu_linux, Debian_linux, Libssh, Oncommand_unified_manager, Oncommand_workflow_automation, Snapcenter, Storage_automation_store, Mysql_workbench, Enterprise_linux 9.1
2016-04-13 CVE-2016-0739 libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug." Ubuntu_linux, Debian_linux, Fedora, Libssh, Enterprise_linux 5.9
2016-04-13 CVE-2015-3146 The (1) SSH_MSG_NEWKEYS and (2) SSH_MSG_KEXDH_REPLY packet handlers in package_cb.c in libssh before 0.6.5 do not properly validate state, which allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted SSH packet. Ubuntu_linux, Debian_linux, Fedora, Libssh 7.5