CVE-2021-21827: Buffer Overflow
First published: Fri Aug 20 2021(Updated: )
A heap-based buffer overflow vulnerability exists in the XML Decompression DecodeTreeBlock functionality of AT&T Labs Xmill 0.7. Within `DecodeTreeBlock` which is called during the decompression of an XMI file, a UINT32 is loaded from the file and used as trusted input as the length of a buffer. An attacker can provide a malicious file to trigger this vulnerability.
Credit: talos-cna@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Att Xmill | =0.7 |
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Frequently Asked Questions
What is CVE-2021-21827?
CVE-2021-21827 is a heap-based buffer overflow vulnerability in the XML Decompression DecodeTreeBlock function of AT&T Labs Xmill 0.7.
How severe is CVE-2021-21827?
CVE-2021-21827 has a severity rating of 9.8, which is classified as critical.
What software is affected by CVE-2021-21827?
The software affected by CVE-2021-21827 is AT&T Labs Xmill 0.7.
How can I fix CVE-2021-21827?
To fix CVE-2021-21827, it is recommended to update to a version of AT&T Labs Xmill that is not affected by the vulnerability.
Where can I find more information about CVE-2021-21827?
More information about CVE-2021-21827 can be found at the following link: [CVE-2021-21827](https://talosintelligence.com/vulnerability_reports/TALOS-2021-1291).
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