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

Configuration 1 (hide)

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

Information

Published : 2021-03-09 10:15

Updated : 2022-09-30 06:29


NVD link : CVE-2021-20263

Mitre link : CVE-2021-20263


JSON object : View

CWE
CWE-281

Improper Preservation of Permissions

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Products Affected

qemu

  • qemu