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GHSA-3w9w-9833-gcpv
No affected components available
Impact
A memory overwrite bug was reported by a security researcher in the ConvertToSinglePlane method via the texconv command-line tool when given an invalid height for planar video textures such as NV12. This can be a potential security bug for any clients of the library who follow the same pattern.
This issue does not impact use of the DDS texture loader itself, only when combined with ConvertToSinglePlane for converting multi-planar video formats. All other functions in the library fail immediately if given images in planar formats.
Patches
The fix to the specific area as well as general hardening can be found in this PR and will be included in the This bug has been fixed in the January 31, 2023 or later release of DirectXTex.
Workarounds
If your code makes use of ConvertToSinglePlane, you can validate that the width & height alignment requirements are met for the input image before calling the function.
The vulnerability requires local access to the device to be exploited. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. The attacker needs the user to perform some action, like clicking a link. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a low impact on the availability of the system.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
Probability that this vulnerability will be exploited in the wild within the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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