CVE-2020-11017— Double free in cliprdr_server_receive_capabilities in FreeRDP
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I. Basic Information for CVE-2020-11017
Vulnerability Information
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Vulnerability Title
Double free in cliprdr_server_receive_capabilities in FreeRDP
Source: NVD (National Vulnerability Database)
Vulnerability Description
In FreeRDP less than or equal to 2.0.0, by providing manipulated input a malicious client can create a double free condition and crash the server. This is fixed in version 2.1.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
双重释放
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 2.0.0及之前版本中的cliprdr_server_receive_capabilities存在资源管理错误漏洞。攻击者可借助特制输入利用该漏洞导致服务器崩溃。
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-2020-11017
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · FreeRDP · 2020-05-29 · 13 CVEs total
| CVE-2020-11039 | 8.0 HIGH | Integer Overflow in FreeRDP |
| CVE-2020-11038 | 6.9 MEDIUM | Integer Overflow to Buffer Overflow in FreeRDP |
| CVE-2020-11018 | 6.5 MEDIUM | Out of bound read in cliprdr_server_receive_capabilities in FreeRDP |
| CVE-2020-11019 | 4.3 MEDIUM | Out of bound read in update_recv in FreeRDP |
| CVE-2020-11089 | 3.7 LOW | Out-of-bound read in FreeRDP |
| CVE-2020-11086 | 3.1 LOW | Out-of-bounds Read in FreeRDP `ntlm_read_ntlm_v2_response` |
| CVE-2020-11087 | 3.1 LOW | Out-of-bounds Read in FreeRDP |
| CVE-2020-11088 | 3.1 LOW | Out-of-bound read in FreeRDP |
| CVE-2020-11085 | 2.6 LOW | Out-of-bounds Read in FreeRDP |
| CVE-2020-11040 | 2.2 LOW | Out-of-bounds Read in FreeRDP |
| CVE-2020-11041 | 2.2 LOW | Improper Validation of Array Index in FreeRDP |
| CVE-2020-11043 | 2.2 LOW | Out-of-bounds Read in FreeRDP |
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
Same weakness: CWE-415
- CVE-2026-23918
Apache HTTP Server: http2: double free and possible RCE on e - CVE-2026-5657
Double Free in Wireshark - CVE-2026-33824
Windows Internet Key Exchange (IKE) Service Extensions Remot - CVE-2026-32074
Windows Projected File System Elevation of Privilege Vulnera - CVE-2026-32069
Windows Projected File System Elevation of Privilege Vulnera
V. Comments for CVE-2020-11017
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