UBUNTU-CVE-2022-0358

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.

References

Affected packages

Ubuntu:22.04:LTS / qemu

Package

Name: qemu
Purl: pkg:deb/ubuntu/qemu@1:6.2+dfsg-2ubuntu6.2?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:6.2+dfsg-2ubuntu6.2

Affected versions

1:6.*

1:6.0+dfsg-2expubuntu1

1:6.0+dfsg-2expubuntu2

1:6.0+dfsg-2expubuntu4

1:6.2+dfsg-2ubuntu5

1:6.2+dfsg-2ubuntu6

1:6.2+dfsg-2ubuntu6.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-block-extra"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-guest-agent"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-system"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-system-arm"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-system-common"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-system-data"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-system-gui"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-system-mips"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-system-misc"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-system-ppc"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-system-s390x"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-system-sparc"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-system-x86"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-system-x86-microvm"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-system-x86-xen"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-user"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-user-binfmt"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-user-static"
        },
        {
            "binary_version": "1:6.2+dfsg-2ubuntu6.2",
            "binary_name": "qemu-utils"
        }
    ],
    "availability": "No subscription required"
}