Mishandling of file-system uid/gid with namespaces in shiftfs
33Vexday Risk Score
Sin señal de explotación. Ella tiene prueba de concepto pública.
ssvc Attendcvss 6.5epss 0.7%
de la publicación al arma0 días
Publicada en NVD23 abr
1ª PoC20 nov
probabilidad de explotación
0.7%top 51% de las CVE
explotación observada
noninguna fuente lo reporta
1 exploit(s) público(s)
In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, several locations which shift ids translate user/group ids before performing operations in the lower filesystem were translating them into init_user_ns, whereas they should have been translated into the s_user_ns for the lower filesystem. This resulted in using ids other than the intended ones in the lower fs, which likely did not map into the shifts s_user_ns. A local attacker could use this to possibly bypass discretionary access control permissions.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Productos afectados
Ubuntu · Shiftfs in the Linux kernelPoCs públicas encontradas — 1✓ VexDay Proof
exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/47693⚠ Recursos públicos, para evaluar la exposición de sistemas que controlas o estás autorizado a probar. Prueba solo con autorización.