Heap-based buffer overflow in Xmill and EcoStruxure Control Expert - CVE-2021-21830

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Main Vulnerability Database Vulnerabilities #VU55800

Heap-based buffer overflow in Xmill and EcoStruxure Control Expert - CVE-2021-21830

Published: August 12, 2021


Vulnerability identifier: #VU55800
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-21830
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: AT&T Labs
Schneider Electric
Affected software:
Xmill
EcoStruxure Control Expert

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the XML Decompression LabelDict::Load functionality. A remote attacker can send a specially crafted XMI file, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


How to mitigate CVE-2021-21830

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Sources