CVE-2023-40576: Out-Of-Bounds Read in FreeRDP
First published: Thu Aug 31 2023(Updated: )
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Out-Of-Bounds Read in the `RleDecompress` function. This Out-Of-Bounds Read occurs because FreeRDP processes the `pbSrcBuffer` variable without checking if it contains data of sufficient length. Insufficient data in the `pbSrcBuffer` variable may cause errors or crashes. This issue has been addressed in version 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this issue.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| =3.0.0-beta1 | ||
| =3.0.0-beta2 | ||
| FreeRDP FreeRDP | =3.0.0-beta1 | |
| FreeRDP FreeRDP | =3.0.0-beta2 |
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Reference Links
Frequently Asked Questions
What is CVE-2023-40576?
CVE-2023-40576 is a vulnerability in the FreeRDP software that allows an Out-Of-Bounds Read in the RleDecompress function.
How severe is CVE-2023-40576?
CVE-2023-40576 has a severity rating of 7.5 (High).
Which versions of FreeRDP are affected by CVE-2023-40576?
The affected versions are FreeRDP 3.0.0-beta1 and FreeRDP 3.0.0-beta2.
How does CVE-2023-40576 occur?
CVE-2023-40576 occurs because FreeRDP processes the pbSrcBuffer variable without checking if it is within bounds.
Are there any references available for CVE-2023-40576?
Yes, the references for CVE-2023-40576 are available at the following URLs: [Reference 1](https://github.com/FreeRDP/FreeRDP/blob/5be5553e0da72178a4b94cc1ffbdace9ceb153e5/libfreerdp/codec/include/bitmap.c#L94-L113) and [Reference 2](https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-x3x5-r7jm-5pq2).
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