CVE-2021-21830 : What You Need to Know
Learn about CVE-2021-21830, a high-severity vulnerability in AT&T Labs Xmill 0.7 that allows remote code execution via a specially crafted XMI file. Find out the impact, affected systems, and mitigation strategies.
A heap-based buffer overflow vulnerability in AT&T Labs Xmill 0.7 allows for remote code execution when processing a specially crafted XMI file.
Understanding CVE-2021-21830
This vulnerability, with a CVSS base score of 8.1, poses a high risk as it can be exploited over a network without user interaction.
What is CVE-2021-21830?
The vulnerability exists in the XML Decompression LabelDict::Load functionality of AT&T Labs' Xmill 0.7. An attacker can exploit this flaw to execute arbitrary code remotely by sending a malicious XMI file.
The Impact of CVE-2021-21830
With a high base severity and impact on confidentiality, integrity, and availability, CVE-2021-21830 can lead to a complete compromise of the affected system.
Technical Details of CVE-2021-21830
This section provides insights into the specific technical aspects of the vulnerability.
Vulnerability Description
The heap-based buffer overflow vulnerability occurs in the XML Decompression LabelDict::Load function of AT&T Labs Xmill 0.7, allowing attackers to achieve remote code execution.
Affected Systems and Versions
The affected product is AT&T Labs Xmill 0.7, exposing systems with this version to the exploitation of the vulnerability.
Exploitation Mechanism
By providing a specially crafted XMI file, threat actors can trigger the heap-based buffer overflow, leading to the execution of malicious code.
Mitigation and Prevention
In this section, we discuss the corrective measures and preventive actions to address CVE-2021-21830.
Immediate Steps to Take
To mitigate the risk associated with this vulnerability, users should consider implementing network-level protections and monitoring for any suspicious activities.
Long-Term Security Practices
Organizations are advised to conduct regular security assessments, keep systems updated with the latest patches, and employ intrusion detection systems to bolster their defenses.
Patching and Updates
It is crucial to apply security patches released by AT&T promptly to remediate the vulnerability and enhance system security.