CVE-2021-20263

LOW

3.3

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.

CVE Details

CVSS v3.1 Score3.3

SeverityLOW

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

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published3/9/2021

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

qemu:qemu

Weaknesses (CWE)

CWE-281CWE-281

References

https://bugzilla.redhat.com/show_bug.cgi?id=1933668(secalert@redhat.com)

https://security.gentoo.org/glsa/202208-27(secalert@redhat.com)

https://security.netapp.com/advisory/ntap-20210507-0002/(secalert@redhat.com)

https://www.openwall.com/lists/oss-security/2021/03/08/1(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=1933668(af854a3a-2127-422b-91ae-364da2661108)

https://security.gentoo.org/glsa/202208-27(af854a3a-2127-422b-91ae-364da2661108)

https://security.netapp.com/advisory/ntap-20210507-0002/(af854a3a-2127-422b-91ae-364da2661108)

https://www.openwall.com/lists/oss-security/2021/03/08/1(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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