Vulnerability CVE-2021-27965

Vulnerability Name:

CVE-2021-27965 (CCN-197810)

Published:

2021-03-05

Updated:

2021-03-16

Summary:

The MsIo64.sys driver before 1.1.19.1016 in MSI Dragon Center before 2.0.98.0 has a buffer overflow that allows privilege escalation via a crafted 0x80102040, 0x80102044, 0x80102050, or 0x80102054 IOCTL request.

CVSS v3 Severity:

9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

7.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

CVSS v2 Severity:

7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): Partial Availibility (A): Partial

6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

Vulnerability Type:

CWE-120

Vulnerability Consequences:

Gain Privileges

References:

Source: MITRE
Type: CNA
CVE-2021-27965

Source: XF
Type: UNKNOWN
ms-msi-cve202127965-priv-esc(197810)

Source: MISC
Type: Broken Link, Third Party Advisory
https://github.com/kronl/cve/tree/master/MSI_Dragon_Center

Source: CCN
Type: Microsoft Web site
MSI Dragon Center

Source: MISC
Type: Patch, Vendor Advisory
https://www.microsoft.com/en-us/p/msi-dragon-center/9nh7n2bv1cqq?activetab=pivot:overviewtab

Vulnerable Configuration:

Configuration 1:

cpe:/a:msi:dragon_center:*:*:*:*:*:*:*:* (Version < 2.0.98.0)

Configuration CCN 1:

cpe:/o:microsoft:windows:-:*:*:*:*:*:*:*

Denotes that component is vulnerable

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