CVE-2023-2283
Severidad:
MEDIA
Type:
CWE-287
Autenticación incorrecta
Fecha de publicación:
26/05/2023
Última modificación:
07/11/2023
Descripción
*** Pendiente de traducción *** 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 between this point and the cryptographic verification. Therefore any error between them calls `goto error` returning SSH_OK.
Impacto
Puntuación base 3.x
6.50
Severidad 3.x
MEDIA
Productos y versiones vulnerables
CPE | Desde | Hasta |
---|---|---|
cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* | 0.9.1 (incluyendo) | 0.9.6 (incluyendo) |
cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* | 0.10.0 (incluyendo) | 0.10.4 (incluyendo) |
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* | ||
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | ||
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* |
Para consultar la lista completa de nombres de CPE con productos y versiones, ver esta página
Referencias a soluciones, herramientas e información
- http://packetstormsecurity.com/files/172861/libssh-0.9.6-0.10.4-pki_verify_data_signature-Authorization-Bypass.html
- https://access.redhat.com/security/cve/CVE-2023-2283
- https://bugzilla.redhat.com/show_bug.cgi?id=2189736
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27PD44ALQTZXX7K6JAM3BXBUHYA6DFFN/
- https://www.libssh.org/security/advisories/CVE-2023-2283.txt