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CVE-2019-16905

openssh: an integer overflow in the private key parsing code for the XMSS key type

OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH.

CVSS 3.1 · 7.8 High EPSS 2.2% KEV · Not listed
Vendors
Netapp Openbsd Siemens
Products
Cloud Backup Steelstore Cloud Integrated Storage Openssh and 4 more
CVE-2003-0190

security flaw

OpenSSH-portable (OpenSSH) 3.6.1p1 and earlier with PAM support enabled immediately sends an error message when a user does not exist, which allows remote attackers to determine valid usernames via a timing attack.

CVSS 2.0 · 5.0 Medium EPSS 76.8% KEV · Not listed
Vendors
Openbsd Openpkg Redhat and 1 more
Products
Openssh Openpkg Enterprise Linux and 5 more