Vulnerability Description
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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Zohocorp | Manageengine Assetexplorer | 1.0.34 |
Related Weaknesses (CWE)
References
- https://www.tenable.com/security/research/tra-2021-30Third Party Advisory
- https://www.tenable.com/security/research/tra-2021-30Third Party Advisory
FAQ
What is CVE-2021-20109?
CVE-2021-20109 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...
How severe is CVE-2021-20109?
CVE-2021-20109 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-20109?
Check the references section above for vendor advisories and patch information. Affected products include: Zohocorp Manageengine Assetexplorer.