CVE-2021-20263

Description

A flaw was found in the virtio-fs shared file system daemon (virtiofsd) of QEMU. The new xattrmap option may cause the security.capability xattr in the guest to not drop on file write, potentially leading to a modified, privileged executable in the guest. In rare circumstances, this flaw could be used by a malicious user to elevate their privileges within the guest.

Risk Information

Base Score

3.3

MODERATE

Vector

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

EPSS Score

Exploitation Probability

0.133

Associated Vulnerability

Vulnerability	OS Platform
Multiple Vulnerabilities are affected in QEMU 5.1.1	Windows

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234