Vulnerabilities > CVE-2021-20263 - Unspecified vulnerability in Qemu
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
NONE Integrity impact
LOW Availability impact
NONE Summary
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.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 20 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1933668
- https://bugzilla.redhat.com/show_bug.cgi?id=1933668
- https://security.gentoo.org/glsa/202208-27
- https://security.gentoo.org/glsa/202208-27
- https://security.netapp.com/advisory/ntap-20210507-0002/
- https://security.netapp.com/advisory/ntap-20210507-0002/
- https://www.openwall.com/lists/oss-security/2021/03/08/1
- https://www.openwall.com/lists/oss-security/2021/03/08/1