Product:

Libssh

(Libssh)
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Unknown:

This might be proprietary software.
#Vulnerabilities 21
Date Id Summary Products Score Patch Annotated
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
2014-12-28 CVE-2014-8132 Double free vulnerability in the ssh_packet_kexinit function in kex.c in libssh 0.5.x and 0.6.x before 0.6.4 allows remote attackers to cause a denial of service via a crafted kexinit packet. Ubuntu_linux, Debian_linux, Fedora, Libssh, Opensuse N/A
2014-03-14 CVE-2014-0017 The RAND_bytes function in libssh before 0.6.3, when forking is enabled, does not properly reset the state of the OpenSSL pseudo-random number generator (PRNG), which causes the state to be shared between children processes and allows local users to obtain sensitive information by leveraging a pid collision. Libssh N/A
2013-02-05 CVE-2013-0176 The publickey_from_privatekey function in libssh before 0.5.4, when no algorithm is matched during negotiations, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a "Client: Diffie-Hellman Key Exchange Init" packet. Libssh N/A
2012-11-30 CVE-2012-6063 Double free vulnerability in the sftp_mkdir function in sftp.c in libssh before 0.5.3 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors, a different vector than CVE-2012-4559. Libssh N/A