Vulnerabilities (CVE)

Filtered by vendor Libssh2 Subscribe
Filtered by product Libssh2
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2020-22218 1 Libssh2 1 Libssh2 2023-08-25 N/A 7.5 HIGH
An issue was discovered in function _libssh2_packet_add in libssh2 1.10.0 allows attackers to access out of bounds memory.
CVE-2019-17498 4 Debian, Fedoraproject, Libssh2 and 1 more 4 Debian Linux, Fedora, Libssh2 and 1 more 2021-12-18 5.8 MEDIUM 8.1 HIGH
In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.
CVE-2019-13115 1 Libssh2 1 Libssh2 2021-12-18 5.8 MEDIUM 8.1 HIGH
In libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds read in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server. This is related to an _libssh2_check_length mistake, and is different from the various issues fixed in 1.8.1, such as CVE-2019-3855.
CVE-2019-3857 7 Debian, Fedoraproject, Libssh2 and 4 more 13 Debian Linux, Fedora, Libssh2 and 10 more 2020-10-15 6.8 MEDIUM 8.8 HIGH
An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit signal are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
CVE-2019-3856 7 Debian, Fedoraproject, Libssh2 and 4 more 13 Debian Linux, Fedora, Libssh2 and 10 more 2020-10-15 6.8 MEDIUM 8.8 HIGH
An integer overflow flaw, which could lead to an out of bounds write, was discovered in libssh2 before 1.8.1 in the way keyboard prompt requests are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
CVE-2019-3855 8 Apple, Debian, Fedoraproject and 5 more 14 Xcode, Debian Linux, Fedora and 11 more 2020-10-15 9.3 HIGH 8.8 HIGH
An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
CVE-2019-3863 5 Debian, Libssh2, Netapp and 2 more 10 Debian Linux, Libssh2, Ontap Select Deploy Administration Utility and 7 more 2019-05-14 6.8 MEDIUM 8.8 HIGH
A flaw was found in libssh2 before 1.8.1. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used as an index to copy memory causing in an out of bounds memory write error.