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CVE-2023-39351— FreeRDP Null Pointer Dereference leading denial of service

Quick assessment

Affected
FreeRDP FreeRDP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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 存在代码问题漏洞，该漏洞源于在某些特殊情况下，tiles的初始化过程没有完成，tiles将会有一个NULL指针。将会导致空指针取消引用。

CVSS 5.3 · Medium EPSS 1.56% · P75

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth
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I. Basic Information for CVE-2023-39351

Vulnerability Information
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Vulnerability Title
FreeRDP Null Pointer Dereference leading denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions of FreeRDP are subject to a Null Pointer Dereference leading a crash in the RemoteFX (rfx) handling. Inside the `rfx_process_message_tileset` function, the program allocates tiles using `rfx_allocate_tiles` for the number of numTiles. If the initialization process of tiles is not completed for various reasons, tiles will have a NULL pointer. Which may be accessed in further processing and would cause a program 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 vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
FreeRDP 代码问题漏洞
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 存在代码问题漏洞，该漏洞源于在某些特殊情况下，tiles的初始化过程没有完成，tiles将会有一个NULL指针。将会导致空指针取消引用。
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 < 2.11.0 -

II. Public POCs for CVE-2023-39351

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III. Intelligence Information for CVE-2023-39351

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Vendor Advisories for CVE-2023-39351 (2)

Mailing List Discussions for CVE-2023-39351 (4)

Same Patch Batch · FreeRDP · 2023-08-31 · 17 CVEs total

CVE-2023-40187 7.3 HIGH Use-After-Free in FreeRDP
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-2023-40589 4.3 MEDIUM FreeRDP Global-Buffer-Overflow in ncrush_decompress

IV. Related Vulnerabilities

Same product: FreeRDP
Same vendor: FreeRDP
Same weakness: CWE-476

V. Comments for CVE-2023-39351

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