CVE Vulnerability

CVE-2021-20181

A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error, potentially escalating their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity as well as system availability.

6.9 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.4 / Impact : 10

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 0.8 / Impact : 6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References
Link Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1927007 Issue Tracking Patch
https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html Mailing List Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-159/ Third Party Advisory VDB Entry
https://security.netapp.com/advisory/ntap-20210720-0009/ Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html Mailing List Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Information

Published : 2021-05-13 04:15

Updated : 2022-09-30 03:18

NVD link : CVE-2021-20181

Mitre link : CVE-2021-20181

Products Affected
No products.
CWE
CWE-362