CVE-2021-20109

Due to the Asset Explorer agent not validating HTTPS certificates, an attacker on the network can statically configure their IP address to match the Asset Explorer's Server IP address. This will allow an attacker to send a NEWSCAN request to a listening agent on the network as well as receive the agent's HTTP request verifying its authtoken. In AEAgent.cpp, the agent responding back over HTTP is vulnerable to a Heap Overflow if the POST payload response is too large. The POST payload response is converted to Unicode using vswprintf. This is written to a buffer only 0x2000 bytes big. If POST payload is larger, then heap overflow will occur.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://www.tenable.com/security/research/tra-2021-30	Third Party Advisory
https://www.tenable.com/security/research/tra-2021-30	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:zohocorp:manageengine_assetexplorer:1.0.34:*:*:*:*:*:*:*

History

21 Nov 2024, 05:45

Type	Values Removed	Values Added
References	~~() https://www.tenable.com/security/research/tra-2021-30 - Third Party Advisory~~	() https://www.tenable.com/security/research/tra-2021-30 - Third Party Advisory

Information

Published : 2021-07-19 15:15

Updated : 2024-11-21 05:45

NVD link : CVE-2021-20109

Mitre link : CVE-2021-20109

CVE.ORG link : CVE-2021-20109

JSON object : View

Products Affected

zohocorp

manageengine_assetexplorer

CWE

CWE-787

Out-of-bounds Write

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