Published: 28/01/2021 Updated: 12/02/2023

CVSS v2 Base Score: 4.6 | Impact Score: 6.4 | Exploitability Score: 3.9

CVSS v3 Base Score: 8.2 | Impact Score: 6 | Exploitability Score: 1.5

VMScore: 409

Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

A flaw was found in qemu. A host privilege escalation issue was found in the virtio-fs shared file system daemon where a privileged guest user is able to create a device special file in the shared directory and use it to r/w access host devices.

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Debian Bug report logs - #980814 qemu: CVE-2020-35517 Package: src:qemu; Maintainer for src:qemu is Debian QEMU Team <pkg-qemu-devel@listsaliothdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Fri, 22 Jan 2021 20:03:04 UTC Severity: grave Tags: security, upstream Found in version qemu/1:52 ...

A potential host privilege escalation issue was found in the virtio-fs shared file system daemon (virtiofsd) of the QEMU Virtio-fs daemon shares the host directory tree with a guest VM The said privilege escalation scenario may occur if a privileged guest user was to create device special file in the shared directory and use it to r/w access hos ...

oss-sec mailing list archives   By Date By Thread </form>    CVE-2020-35517 QEMU: virtiofsd: potential privileged host device access from guest  <!--X-Head-of-M ...

CWE-269 https://bugzilla.redhat.com/show_bug.cgi?id=1915823 https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg05461.html https://www.openwall.com/lists/oss-security/2021/01/22/1 https://github.com/qemu/qemu/commit/ebf101955ce8f8d72fba103b5151115a4335de2c https://security.netapp.com/advisory/ntap-20210312-0002/https://security.gentoo.org/glsa/202208-27 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=980814 https://nvd.nist.gov https://security.archlinux.org/CVE-2020-35517

CVE-2020-35517

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