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CVE-2020-35517

Date: January 28, 2021

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.

Language: C

Severity Score

Related Resources (16)

https://security-tracker.debian.org/tracker/CVE-2020-35517
https://virtio-fs.gitlab.io/
https://security.gentoo.org/glsa/202208-27
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-35517
https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg05461.html
https://security.netapp.com/advisory/ntap-20210312-0002/
https://access.redhat.com/errata/RHBA-2021:0639
https://github.com/qemu/qemu/commit/ebf101955ce8f8d72fba103b5151115a4335de2c
https://access.redhat.com/errata/RHSA-2021:0711
https://access.redhat.com/errata/RHSA-2021:0743
https://security.alpinelinux.org/vuln/CVE-2020-35517
https://nvd.nist.gov/vuln/detail/CVE-2020-35517
https://bugzilla.redhat.com/show_bug.cgi?id=1915823
https://access.redhat.com/security/cve/CVE-2020-35517
https://www.openwall.com/lists/oss-security/2021/01/22/1
https://www.mend.io/vulnerability-database/CVE-2020-35517

Severity Score

Weakness Type (CWE)

Improper Access Control

CWE-284

Improper Privilege Management

CWE-269

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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