Unrated severityNVD Advisory· Published Mar 9, 2021· Updated Aug 3, 2024
CVE-2021-20263
CVE-2021-20263
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.
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Affected products
6- osv-coords4 versionspkg:rpm/opensuse/qemu&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/qemu&distro=openSUSE%20Tumbleweedpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP3
< 5.2.0-17.1+ 3 more
- (no CPE)range: < 5.2.0-17.1
- (no CPE)range: < 6.1.0-32.1
- (no CPE)range: < 5.2.0-17.1
- (no CPE)range: < 5.2.0-17.1
Patches
Vulnerability mechanics
References
4- security.gentoo.org/glsa/202208-27mitrevendor-advisoryx_refsource_GENTOO
- bugzilla.redhat.com/show_bug.cgimitrex_refsource_MISC
- security.netapp.com/advisory/ntap-20210507-0002/mitrex_refsource_CONFIRM
- www.openwall.com/lists/oss-security/2021/03/08/1mitrex_refsource_MISC
News mentions
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