Integer underflow in Xmill - CVE-2021-21811

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Main Vulnerability Database Vulnerabilities #VU55792

Integer underflow in Xmill - CVE-2021-21811

Published: August 12, 2021


Vulnerability identifier: #VU55792
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-2021-21811
CWE-ID: CWE-191
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: AT&T Labs
Affected software:
Xmill

Detailed vulnerability description

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

The vulnerability exists due to integer underflow in the XML-parsing CreateLabelOrAttrib functionality. A remote attacker can send a specially crafted XML file, trigger integer underflow 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-2021-21811

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

Sources