CVE-2023-2283

Katalog CVE

CVSS 6.5 · Medium EPSS 1,1%

Kerentanan Improper Authentication pada libssh, fedoraproject fedora +1 lainnya. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

26 Mei 2023

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

6.5 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-287: Improper Authentication

EPSS (30 hari)

1,1% peluang dieksploitasi; lebih tinggi dari 63,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.libssh.org/security/advisories/CVE-2023-2283.txt advisory vendor
• https://access.redhat.com/security/cve/CVE-2023-2283 advisory pihak ketiga
• https://bugzilla.redhat.com/show_bug.cgi?id=2189736 issue tracking · advisory pihak ketiga
• http://packetstormsecurity.com/files/172861/libssh-0.9.6-0.10.4-pki_verify_data_signature-Authorization-Bypass...
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27PD44ALQTZXX...
• https://security.gentoo.org/glsa/202312-05
• https://security.netapp.com/advisory/ntap-20240201-0005/
• http://seclists.org/fulldisclosure/2025/Feb/18