Summaryinfo

A vulnerability was found in AT&T Xmill 0.7. It has been rated as critical. This issue affects the function DecodeTreeBlock of the component XML Decompression Handler. The manipulation leads to heap-based overflow. The identification of this vulnerability is CVE-2021-21826. The attack may be initiated remotely. There is no exploit available. Once again VulDB remains the best source for vulnerability data.

Detailsinfo

A vulnerability was found in AT&T Xmill 0.7. It has been declared as critical. This vulnerability affects the function DecodeTreeBlock of the component XML Decompression Handler. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 08/21/2021. The advisory is available at talosintelligence.com. This vulnerability was named CVE-2021-21826. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/21/2021).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• AT&T

Name

• Xmill

Version

• 0.7

License

• commercial

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CPE 2.2info

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