CVE-2023-2861

Qemu: 9pfs: improper access control on special files

CVSS 6 MEDIUMEPSS 0.4%CWE-284

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

06 Dec 2023Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU. The 9pfs server did not prohibit opening special files on the host side, potentially allowing a malicious client to escape from the exported 9p tree by creating and opening a device file in the shared folder.

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Affected products

qemu

References

https://access.redhat.com/security/cve/CVE-2023-2861 https://bugzilla.redhat.com/show_bug.cgi?id=2219266 https://lists.debian.org/debian-lts-announce/2024/03/msg00012.html https://security.netapp.com/advisory/ntap-20240125-0005/https://security.netapp.com/advisory/ntap-20240229-0002/