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 |
| 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
History
21 Nov 2024, 05:46
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=1933668 - Issue Tracking, Patch, Third Party Advisory | |
| References | () https://security.gentoo.org/glsa/202208-27 - Third Party Advisory | |
| References | () https://security.netapp.com/advisory/ntap-20210507-0002/ - Third Party Advisory | |
| References | () https://www.openwall.com/lists/oss-security/2021/03/08/1 - Mailing List, Patch, Third Party Advisory |
Information
Published : 2021-03-09 18:15
Updated : 2024-11-21 05:46
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