CVSS 7.5 · High EPSS 1,3%
Kerentanan Use of Uninitialized Resource pada canonical ubuntu linux, openbsd openssh +2 lainnya. Skor CVSS 3.1 7.5 (High) menurut NVD.
Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions. This vulnerability affects the GSSAPI patches added by various Linux distributions and does not affect the OpenSSH upstream project itself. The usage of sshpkt_disconnect() on an error, which does not terminate the process, allows an attacker to send an unexpected GSSAPI message type during the GSSAPI key exchange to the server, which will call the underlying function and continue the execution of the program without setting the related connection variables. As the variables are not initialized to NULL the code later accesses those uninitialized variables, accessing random memory, which could lead to undefined behavior. The recommended workaround is to use ssh_packet_disconnect() instead, which does terminate the process. The impact of the vulnerability depends heavily on the compiler flag hardening configuration.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| canonical | ubuntu linux | Versi 25.10 |
| openbsd | openssh | Semua versi |
| canonical | ubuntu linux | Versi 20.04 |
| canonical | ubuntu linux | Versi 22.04 |
| canonical | ubuntu linux | Versi 24.04 |
| debian | debian linux | Versi 11.0 |
| redhat | enterprise linux | Versi 8.0 |
| redhat | enterprise linux | Versi 9.0 |
| redhat | enterprise linux | Versi 10.0 |