CVE-2023-40187— Use-After-Free in FreeRDP
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I. Basic Information for CVE-2023-40187
Vulnerability Information
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Vulnerability Title
Use-After-Free in FreeRDP
Source: NVD (National Vulnerability Database)
Vulnerability Description
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions of the 3.x beta branch are subject to a Use-After-Free issue in the `avc420_ensure_buffer` and `avc444_ensure_buffer` functions. If the value of `piDstSize[x]` is 0, `ppYUVDstData[x]` will be freed. However, in this case `ppYUVDstData[x]` will not have been updated which leads to a Use-After-Free vulnerability. This issue has been addressed in version 3.0.0-beta3. Users of the 3.x beta releases are advised to upgrade. There are no known workarounds for this vulnerability.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放后使用
Source: NVD (National Vulnerability Database)
Vulnerability Title
FreeRDP 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeRDP是FreeRDP团队的一款开源的远程桌面协议（RDP）的实现。 FreeRDP 存在资源管理错误漏洞，该漏洞源于在 avc420_ensure_buffer 和 avc444_ensure_buffer 函数中存在释放后重用问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-40187
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- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-pwf9-v5p9-ch4fx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2023-40187
Same Patch Batch · FreeRDP · 2023-08-31 · 17 CVEs total
| CVE-2023-39355 | 7.0 HIGH | FreeRDP Use-After-Free in RDPGFX_CMDID_RESETGRAPHICS |
| CVE-2023-40567 | 6.5 MEDIUM | Out-Of-Bounds Write in FreeRDP |
| CVE-2023-40569 | 6.5 MEDIUM | Out-Of-Bounds Write in FreeRDP |
| CVE-2023-40574 | 6.5 MEDIUM | Out-Of-Bounds Write in FreeRDP |
| CVE-2023-40186 | 6.5 MEDIUM | IntegerOverflow leading to Out-Of-Bound Write Vulnerability in FreeRDP |
| CVE-2023-39354 | 5.9 MEDIUM | FreeRDP Out-Of-Bounds Read in nsc_rle_decompress_data |
| CVE-2023-39350 | 5.9 MEDIUM | Incorrect offset calculation leading to denial of service in FreeRDP |
| CVE-2023-40576 | 5.3 MEDIUM | Out-Of-Bounds Read in FreeRDP |
| CVE-2023-40575 | 5.3 MEDIUM | Out-Of-Bounds Read in FreeRDP |
| CVE-2023-40188 | 5.3 MEDIUM | Out-Of-Bounds Read in FreeRDP |
| CVE-2023-40181 | 5.3 MEDIUM | Integer-Underflow leading to Out-Of-Bound Read in FreeRDP |
| CVE-2023-39356 | 5.3 MEDIUM | Missing offset validation leading to Out-of-Bounds Read in FreeRDP |
| CVE-2023-39352 | 5.3 MEDIUM | Invalid offset validation leading to Out Of Bound Write in FreeRDP |
| CVE-2023-39353 | 5.3 MEDIUM | Missing offset validation leading to Out Of Bound Read in FreeRDP |
| CVE-2023-39351 | 5.3 MEDIUM | FreeRDP Null Pointer Dereference leading denial of service |
| CVE-2023-40589 | 4.3 MEDIUM | FreeRDP Global-Buffer-Overflow in ncrush_decompress |
IV. Related Vulnerabilities
Same product: FreeRDP
- CVE-2026-40254
FreeRDP: contains_dotdot() off-by-one allows drive channel p - CVE-2026-33995
FreeRDP: Possible double free in kerberos_AcceptSecurityCont - CVE-2026-33987
FreeRDP: Persistent Cache bmpSize Desync - Heap OOB Write - CVE-2026-33986
FreeRDP: H.264 YUV Buffer Dimension Desync - Heap OOB Write - CVE-2026-33985
FreeRDP: ClearCodec Glyph Cache Count Desync - Heap OOB Read
Same vendor: FreeRDP
- CVE-2026-40254
FreeRDP: contains_dotdot() off-by-one allows drive channel p - CVE-2026-33995
FreeRDP: Possible double free in kerberos_AcceptSecurityCont - CVE-2026-33987
FreeRDP: Persistent Cache bmpSize Desync - Heap OOB Write - CVE-2026-33986
FreeRDP: H.264 YUV Buffer Dimension Desync - Heap OOB Write - CVE-2026-33985
FreeRDP: ClearCodec Glyph Cache Count Desync - Heap OOB Read
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