CVE-2021-36286

Dell SupportAssist Client Consumer versions 3.9.13.0 and any versions prior to 3.9.13.0 contain an arbitrary file deletion vulnerability that can be exploited by using the Windows feature of NTFS called Symbolic links. Symbolic links can be created by any(non-privileged) user under some object directories, but by themselves are not sufficient to successfully escalate privileges. However, combining them with a different object, such as the NTFS junction point allows for the exploitation. Support assist clean files functionality do not distinguish junction points from the physical folder and proceeds to clean the target of the junction that allows nonprivileged users to create junction points and delete arbitrary files on the system which can be accessed only by the admin.

CVSS v3 7.1 HIGH
CVSS v2.0 3.6 LOW

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

3.6^/10

CVSS v2.0 : LOW

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

Exploitability : 3.9 / Impact : 4.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.dell.com/support/kbdoc/en-us/000191057/dsa-2021-163-dell-supportassist-client-consumer-security-update-for-two-vulnerabilities	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:dell:supportassist_client_consumer:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-09-28 20:15

Updated : 2022-10-25 14:56

NVD link : CVE-2021-36286

Mitre link : CVE-2021-36286

CVE.ORG link : CVE-2021-36286

JSON object : View

Products Affected

dell

supportassist_client_consumer

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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