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
History
30 Sep 2022, 13:29
| Type | Values Removed | Values Added |
|---|---|---|
| References | (GENTOO) https://security.gentoo.org/glsa/202208-27 - Third Party Advisory |
15 Aug 2022, 11:15
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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01 Jan 2022, 18:02
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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15 Mar 2021, 13:37
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : 2.1
v3 : 3.3 |
| References | (MISC) https://www.openwall.com/lists/oss-security/2021/03/08/1 - Mailing List, Patch, Third Party Advisory | |
| References | (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1933668 - Issue Tracking, Patch, Third Party Advisory | |
| CWE | CWE-281 |
09 Mar 2021, 18:39
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2021-03-09 18:15
Updated : 2023-12-10 13:41
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