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OpenAdvisories
Unscored CVE-2021-20109 EUVD-2021-7566GHSA-3683-2c96-6v5c

Due to the Asset Explorer agent not validating HTTPS certificates, an attacker on the network can statically configure their IP address to …

Published Jul 19, 2021 · Updated Aug 3, 2024 · Assigned by tenable

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.

Affected products

VendorProductAffectedFixed
— Manage Engine Asset Explorer Agent 1.0.34 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Ubuntu 26.10 due No fix yet —
Ubuntu 26.04 LTS due No fix yet —
Ubuntu 25.10 due No fix yet —
Ubuntu 24.04 LTS due No fix yet —
Ubuntu 22.04 LTS due No fix yet —

References