Computer Security: A Growing Concern with Recent FreeRDP Vulnerabilities
Computer security is becoming increasingly important with each passing day, and the task of patching security vulnerabilities is growing for software developers. FreeRDP, an important software, has recently seen the discovery of a series of serious security vulnerabilities. In this article, we will thoroughly examine the security vulnerabilities identified in FreeRDP, as detailed below. Additionally, we will provide a guide on how to protect against and mitigate these vulnerabilities:
CVE-2023-39351: Null Pointer Dereference in the RemoteFX (rfx) handling This security vulnerability points to a Null Pointer Dereference that occurs during the RemoteFX (rfx) processing in FreeRDP. Such a vulnerability means that attackers can use this vulnerability to launch denial-of-service attacks.
CVE-2023-39354: Out-Of-Bounds Read in the nsc_rle_decompress_data function FreeRDP has a flaw in the nsc_rle_decompress_data function, resulting in out-of-bounds reading. This vulnerability can allow malicious attackers to infiltrate the system and gain access to sensitive data.
CVE-2023-39352: Invalid Offset Validation Leading to Out Of Bound Write This vulnerability leads to an out-of-bound write issue due to invalid offset validation. Such a vulnerability can allow attackers to manipulate affected software to compromise the system.
CVE-2023-39356: Lack of Offset Validation in the gdi_multi_opaque_rect Function There are out-of-bounds reading issues due to the lack of offset validation in the gdi_multi_opaque_rect function. This vulnerability can allow attackers to access sensitive data.
CVE-2023-39353: Lack of Offset Validation Leading to Out Of Bound Read This security vulnerability highlights situations where offset validation is missing, potentially leading to out-of-bound reading issues.
CVE-2023-39355: Use-After-Free Issue in processing RDPGFX_CMDID_RESETGRAPHICS packets This vulnerability emphasizes a Use-After-Free error in the processing of RDPGFX_CMDID_RESETGRAPHICS packets. Attackers can exploit this vulnerability to engage in malicious activities on RDP connections.
CVE-2023-40187: Use-After-Free Issue in the avc420_ensure_buffer and avc444_ensure_buffer functions This security vulnerability points to Use-After-Free issues in the avc420_ensure_buffer and avc444_ensure_buffer functions.
CVE-2023-40186: Out-Of-Bounds Write Vulnerability in the gdi_CreateSurface Function This vulnerability highlights an out-of-bounds write vulnerability in the gdi_CreateSurface function. Such a vulnerability can allow attackers to manipulate software affecting the target system.
CVE-2023-40567: Out-Of-Bounds Write in the clear_decompress_bands_data Function This security vulnerability expresses an out-of-bounds write issue in the clear_decompress_bands_data function.
CVE-2023-40181: Out-Of-Bounds Read in the zgfx_decompress_segment Function This security vulnerability emphasizes out-of-bounds reading issues in the zgfx_decompress_segment function.
CVE-2023-40569: Out-Of-Bounds Write in the progressive_decompress Function This vulnerability points to out-of-bounds write issues in the progressive_decompress function.
CVE-2023-40574: Out-Of-Bounds Write in the writePixelBGRX Function This security vulnerability highlights out-of-bounds write issues in the writePixelBGRX function.
CVE-2023-40576: Out-Of-Bounds Read in the RleDecompress Function This vulnerability points to out-of-bounds read issues in the RleDecompress function.
CVE-2023-40575: Out-Of-Bounds Read in the general_YUV444ToRGB_8u_P3AC4R_BGRX Function This security vulnerability highlights out-of-bounds read issues in the general_YUV444ToRGB_8u_P3AC4R_BGRX function.
CVE-2023-41752: Use-After-Free Issue in the avc420_ensure_buffer and avc444_ensure_buffer functions This vulnerability points to Use-After-Free issues in the avc420_ensure_buffer and avc444_ensure_buffer functions.
CVE-2023-41753: Out-Of-Bounds Write Vulnerability in the gdi_CreateSurface Function This security vulnerability highlights an out-of-bounds write vulnerability in the gdi_CreateSurface function.
CVE-2023-40589: Global-Buffer-Overflow Finally, we draw attention to a Global-Buffer-Overflow security vulnerability found in affected versions of FreeRDP.
In this article, we have examined a series of CVEs discovered 31 August and 1 September in FreeRDP, which pose serious security risks. These vulnerabilities have the potential to harm your system. The key to staying safe is to use an up-to-date and secure version of FreeRDP, regularly check for security updates, and employ strong passwords. This guide will assist you in taking these important steps.