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CVE-2024-32662— FreeRDP rdp_redirection_read_base64_wchar out of bound read

Quick assessment

Affected
FreeRDP FreeRDP
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FreeRDP是FreeRDP团队的一款开源的远程桌面协议（RDP）的实现。 FreeRDP 3.5.1 版本之前存在安全漏洞，该漏洞源于基于 FreeRDP 的客户端容易受到越界读取的影响。当以两倍大小读取 WCHAR 字符串并将其转换为 UTF-8 、 base64 解码时，会发生这种情况。

CVSS 7.5 · High EPSS 0.77% · P54

Possible ATT&CK Techniques 1 AI

T1200 · Hardware Additions
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I. Basic Information for CVE-2024-32662

Vulnerability Information
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Vulnerability Title
FreeRDP rdp_redirection_read_base64_wchar out of bound read
Source: CVE Program / CVE List V5
Vulnerability Description
FreeRDP is a free implementation of the Remote Desktop Protocol. FreeRDP based clients prior to version 3.5.1 are vulnerable to out-of-bounds read. This occurs when `WCHAR` string is read with twice the size it has and converted to `UTF-8`, `base64` decoded. The string is only used to compare against the redirection server certificate. Version 3.5.1 contains a patch for the issue. No known workarounds are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
FreeRDP 安全漏洞
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 3.5.1 版本之前存在安全漏洞，该漏洞源于基于 FreeRDP 的客户端容易受到越界读取的影响。当以两倍大小读取 WCHAR 字符串并将其转换为 UTF-8 、 base64 解码时，会发生这种情况。
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

Vendor Product Affected Versions CPE Subscribe
FreeRDP FreeRDP < 3.5.1 -

II. Public POCs for CVE-2024-32662

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 14570 chars
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III. Intelligence Information for CVE-2024-32662

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Patches & Fixes for CVE-2024-32662 (1)

Vendor Advisories for CVE-2024-32662 (1)

Mailing List Discussions for CVE-2024-32662 (4)

Other References for CVE-2024-32662 (1)

Same Patch Batch · FreeRDP · 2024-04-23 · 5 CVEs total

CVE-2024-32659 9.8 CRITICAL freerdp_image_copy out of bound read
CVE-2024-32658 9.8 CRITICAL FreeRDP ExtractRunLengthRegular* out of bound read
CVE-2024-32661 7.5 HIGH FreeRDP rdp_write_logon_info_v1 NULL access
CVE-2024-32660 7.5 HIGH FreeRDP zgfx_decompress out of memory vulnerability

IV. Related Vulnerabilities

Same product: FreeRDP
Same vendor: FreeRDP
Same weakness: CWE-125

V. Comments for CVE-2024-32662

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