CVE-2021-20263

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.
References
Link Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1933668 Issue Tracking Patch Third Party Advisory
https://security.gentoo.org/glsa/202208-27 Third Party Advisory
https://security.netapp.com/advisory/ntap-20210507-0002/ Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/03/08/1 Mailing List Patch Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-03-09 18:15

Updated : 2024-02-28 18:08


NVD link : CVE-2021-20263

Mitre link : CVE-2021-20263

CVE.ORG link : CVE-2021-20263


JSON object : View

Products Affected

qemu

  • qemu
CWE
CWE-281

Improper Preservation of Permissions