7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.3 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:S/C:P/I:P/A:P
0.0004 Low
EPSS
Percentile
5.3%
A flaw was found in the QEMU virtio-fs shared file system daemon
(virtiofsd) implementation. This flaw is strictly related to
CVE-2018-13405. A local guest user can create files in the directories
shared by virtio-fs with unintended group ownership in a scenario where a
directory is SGID to a certain group and is writable by a user who is not a
member of the group. This could allow a malicious unprivileged user inside
the guest to gain access to resources accessible to the root group,
potentially escalating their privileges within the guest. A malicious local
user in the host might also leverage this unexpected executable file
created by the guest to escalate their privileges on the host system.
Author | Note |
---|---|
mdeslaur | virtiofsd was added in 5.0 |
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.3 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:S/C:P/I:P/A:P
0.0004 Low
EPSS
Percentile
5.3%