CVE-2023-40181
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Integer-Underflow leading to Out-Of-Bound Read in the zgfx_decompress_segment function. In the context of CopyMemory, it's possible to read data beyond the transmitted packet range and likely cause a crash. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this issue.
| Software | From | Fixed in |
|---|---|---|
| freerdp / freerdp | 3.0.0-beta1 | 3.0.0-beta1.x |
| freerdp / freerdp | 3.0.0-beta2 | 3.0.0-beta2.x |
| freerdp / freerdp | - | 2.11.0 |
| debian / debian_linux | 10.0 | 10.0.x |
| fedoraproject / fedora | 37 | 37.x |
| fedoraproject / fedora | 38 | 38.x |
| fedoraproject / fedora | 39 | 39.x |
- https://github.com/FreeRDP/FreeRDP/blob/2252d53001d9ce8a452f0a0a5b1f5ed9db6d57f1/libfreerdp/codec/zgfx.c#L256-L261
- https://github.com/FreeRDP/FreeRDP/blob/2252d53001d9ce8a452f0a0a5b1f5ed9db6d57f1/libfreerdp/codec/zgfx.c#L334-L355
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mxp4-rx7x-h2g8
- https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html
- https://lists.debian.org/debian-lts-announce/2025/02/msg00016.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A6LLDAPEXRDJOM3PREDDD267SSNT77DP/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IHMTGKCZXJPQOR5ZD2I4GPDNP2DKRXMF/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OH2ATH2BKDNKCJAU4WPPXK4SHLE3UJUV/
- https://security.gentoo.org/glsa/202401-16
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