CVE-2023-54391: fallo crítico en Proxmox Virtual Environment (VE)
Proxmox VE 7.0-8.0 Authentication Bypass via tfa-challenge Parameter
Publicada el · Actualizada el
85Vexday Risk Score
Corrige ahora. Ella explotación observada por VulnCheck y tiene exploit funcional público.
ssvc Actcvss 9.3epss 3.1%
de la publicación al arma2 días
Publicada en NVD1 sept
1ª PoC+2d
VulnCheck1 sept
probabilidad de explotación
3.1%top 13% de las CVE
explotación observada
síVulnCheck
4 exploit(s) público(s)
Proxmox Virtual Environment (VE) 7.0 through 8.0 contains an authentication bypass vulnerability in libpve-access-control before 8.0.4 that allows unauthenticated attackers to authenticate as any existing enabled user without a configured second factor by supplying an arbitrary tfa-challenge value in the API login endpoint. Attackers can send a POST request to the access ticket API endpoint with any value in the tfa-challenge parameter to completely skip password verification, gaining unauthorized access including to the root@pam account. All affected releases are end of life.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Productos afectados
Proxmox Server Solutions GmbH · Proxmox Virtual Environment (VE)PoCs públicas encontradas — 4
githubgithub.com/alexand0www/CVE-2023-54391-RCE★ 2githubgithub.com/alexandrov666/CVE-2023-54391-RCE★ 0githubgithub.com/disqualifier/psa-2026-00043-recovery★ 0vulncheckvulncheck.com/xdb/00c50ea74c4ano verificado⚠ Recursos públicos, para evaluar la exposición de sistemas que controlas o estás autorizado a probar. Prueba solo con autorización.
Referencias
https://forum.proxmox.com/threads/proxmox-virtual-environment-security-advisories.149331/page-4#post-867929https://git.proxmox.com/?p=pve-access-control.git;a=commit;h=032e7d6d441f89a48cadfd7f47e957c8a561c022https://git.proxmox.com/?p=pve-access-control.git;a=commit;h=0f3d14d6be4d9f23e511701696a529ef3b7ffd61https://www.vulncheck.com/advisories/proxmox-ve-authentication-bypass-via-tfa-challenge-parameter