CVE-2021-41160

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. In affected versions a malicious server might trigger out of bound writes in a connected client. Connections using GDI or SurfaceCommands to send graphics updates to the client might send `0` width/height or out of bound rectangles to trigger out of bound writes. With `0` width or heigth the memory allocation will be `0` but the missing bounds checks allow writing to the pointer at this (not allocated) region. This issue has been patched in FreeRDP 2.4.1.

CVSS v3 8.8 HIGH
CVSS v2.0 6.8 MEDIUM

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7c9r-6r2q-93qg	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/11/msg00010.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DWJXQOWKNR7O5HM2HFJOM4GBUFPTE3RG/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WIZUPVRGCWUDAPDOQVUGUIYUO7UWKMXX/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZXCR73EDVPLI6TRWRAWJCJ7OBYDKBB74/
https://security.gentoo.org/glsa/202210-24	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:33:::::::*
	cpe:2.3:o:fedoraproject:fedora:34:::::::*
	cpe:2.3:o:fedoraproject:fedora:35:::::::*

History

No history.

Information

Published : 2021-10-21 19:15

Updated : 2023-11-17 19:15

NVD link : CVE-2021-41160

Mitre link : CVE-2021-41160

CVE.ORG link : CVE-2021-41160

JSON object : View

Products Affected

fedoraproject

fedora

freerdp

freerdp

CWE

CWE-787

Out-of-bounds Write

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In affected versions a malicious server might trigger out of bound writes in a connected client. Connections using GDI or SurfaceCommands to send graphics updates to the client might send `0` width/height or out of bound rectangles to trigger out of bound writes. With `0` width or heigth the memory allocation will be `0` but the missing bounds checks allow writing to the pointer at this (not allocated) region. This issue has been patched in FreeRDP 2.4.1."}, {"lang": "es", "value": "FreeRDP es una implementaci\u00f3n libre del Protocolo de Escritorio Remoto (RDP), publicada bajo la licencia Apache. En las versiones afectadas, un servidor malicioso podr\u00eda desencadenar escrituras fuera de l\u00edmites en un cliente conectado. Las conexiones que usan GDI o SurfaceCommands para enviar actualizaciones de gr\u00e1ficos al cliente podr\u00edan enviar rect\u00e1ngulos de anchura/altura \"0\" o fuera de l\u00edmites para desencadenar escrituras fuera de l\u00edmites. Con una anchura o altura de \"0\" la asignaci\u00f3n de memoria ser\u00e1 \"0\" pero las comprobaciones de l\u00edmites faltantes permiten escribir en el puntero en esta regi\u00f3n (no asignada). 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