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amazonAmazonALAS2-2023-2269
HistorySep 27, 2023 - 10:48 p.m.

Medium: freerdp

2023-09-2722:48:00
alas.aws.amazon.com
11
freerdp
rdp
clients
null
pointer
oob
read
vulnerabilities
apache
license
dos
crash
upgrade

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

8.7

Confidence

High

EPSS

0.001

Percentile

48.8%

Issue Overview:

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. This issue affects Clients only. Integer underflow leading to DOS (e.g. abort due to WINPR_ASSERT with default compilation flags). When an insufficient blockLen is provided, and proper length validation is not performed, an Integer Underflow occurs, leading to a Denial of Service (DOS) vulnerability. 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. (CVE-2023-39350)

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. (CVE-2023-39351)

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to a missing offset validation leading to Out Of Bound Read. In the libfreerdp/codec/rfx.c file there is no offset validation in tile->quantIdxY, tile->quantIdxCb, and tile->quantIdxCr. As a result crafted input can lead to an out of bounds read access which in turn will cause a 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. (CVE-2023-39353)

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Out-Of-Bounds Read in the nsc_rle_decompress_data function. The Out-Of-Bounds Read occurs because it processes context->Planes without checking if it contains data of sufficient length. Should an attacker be able to leverage this vulnerability they may be able to cause a 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. (CVE-2023-39354)

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. In affected versions a missing offset validation may lead to an Out Of Bound Read in the function gdi_multi_opaque_rect. In particular there is no code to validate if the value multi_opaque_rect->numRectangles is less than 45. Looping through multi_opaque_rect->numRectangles without proper boundary checks can lead to Out-of-Bounds Read errors which will likely lead to a 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. (CVE-2023-39356)

NOTE: https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mxp4-rx7x-h2g8 (CVE-2023-40181)

NOTE: https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-hcj4-3c3r-5j3v (CVE-2023-40186)

NOTE: https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9w28-wwj5-p4xq (CVE-2023-40188)

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Out-Of-Bounds Write in the clear_decompress_bands_data function in which there is no offset validation. Abuse of this vulnerability may lead to an out of bounds write. 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. (CVE-2023-40567)

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Out-Of-Bounds Write in the progressive_decompress function. This issue is likely down to incorrect calculations of the nXSrc and nYSrc variables. 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. (CVE-2023-40569)

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. In affected versions there is a Global-Buffer-Overflow in the ncrush_decompress function. Feeding crafted input into this function can trigger the overflow which has only been shown to cause a 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 issue. (CVE-2023-40589)

Affected Packages:

freerdp

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update freerdp to update your system.

New Packages:

aarch64:  
    freerdp-2.11.1-1.amzn2.0.1.aarch64  
    freerdp-libs-2.11.1-1.amzn2.0.1.aarch64  
    freerdp-devel-2.11.1-1.amzn2.0.1.aarch64  
    libwinpr-2.11.1-1.amzn2.0.1.aarch64  
    libwinpr-devel-2.11.1-1.amzn2.0.1.aarch64  
    freerdp-debuginfo-2.11.1-1.amzn2.0.1.aarch64  
  
i686:  
    freerdp-2.11.1-1.amzn2.0.1.i686  
    freerdp-libs-2.11.1-1.amzn2.0.1.i686  
    freerdp-devel-2.11.1-1.amzn2.0.1.i686  
    libwinpr-2.11.1-1.amzn2.0.1.i686  
    libwinpr-devel-2.11.1-1.amzn2.0.1.i686  
    freerdp-debuginfo-2.11.1-1.amzn2.0.1.i686  
  
src:  
    freerdp-2.11.1-1.amzn2.0.1.src  
  
x86_64:  
    freerdp-2.11.1-1.amzn2.0.1.x86_64  
    freerdp-libs-2.11.1-1.amzn2.0.1.x86_64  
    freerdp-devel-2.11.1-1.amzn2.0.1.x86_64  
    libwinpr-2.11.1-1.amzn2.0.1.x86_64  
    libwinpr-devel-2.11.1-1.amzn2.0.1.x86_64  
    freerdp-debuginfo-2.11.1-1.amzn2.0.1.x86_64  

Additional References

Red Hat: CVE-2023-39350, CVE-2023-39351, CVE-2023-39353, CVE-2023-39354, CVE-2023-39356, CVE-2023-40181, CVE-2023-40186, CVE-2023-40188, CVE-2023-40567, CVE-2023-40569, CVE-2023-40589

Mitre: CVE-2023-39350, CVE-2023-39351, CVE-2023-39353, CVE-2023-39354, CVE-2023-39356, CVE-2023-40181, CVE-2023-40186, CVE-2023-40188, CVE-2023-40567, CVE-2023-40569, CVE-2023-40589

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

8.7

Confidence

High

EPSS

0.001

Percentile

48.8%