7.8
HIGH
CVE-2021-28927
RetroArch PowerShell Command Injection
Description

The text-to-speech engine in libretro RetroArch for Windows 1.9.0 passes unsanitized input to PowerShell through platform_win32.c via the accessibility_speak_windows function, which allows attackers who have write access on filesystems that are used by RetroArch to execute code via command injection using specially a crafted file and directory names.

INFO

Published Date :

April 7, 2021, 3:15 p.m.

Last Modified :

Nov. 21, 2024, 6 a.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2021-28927 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Microsoft windows
1 Libretro retroarch
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-28927.

URL Resource
http://libretro.com Exploit Vendor Advisory
http://retroarch.com Product Vendor Advisory
https://github.com/libretro/RetroArch/blob/d3dc3ee989ec6a4903c689907ffc47027f71f776/frontend/drivers/platform_win32.c Patch Third Party Advisory
https://labs.bishopfox.com/advisories/retroarch-for-windows-version-1.9.0 Exploit Third Party Advisory
http://libretro.com Exploit Vendor Advisory
http://retroarch.com Product Vendor Advisory
https://github.com/libretro/RetroArch/blob/d3dc3ee989ec6a4903c689907ffc47027f71f776/frontend/drivers/platform_win32.c Patch Third Party Advisory
https://labs.bishopfox.com/advisories/retroarch-for-windows-version-1.9.0 Exploit Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-28927 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-28927 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://libretro.com
    Added Reference http://retroarch.com
    Added Reference https://github.com/libretro/RetroArch/blob/d3dc3ee989ec6a4903c689907ffc47027f71f776/frontend/drivers/platform_win32.c
    Added Reference https://labs.bishopfox.com/advisories/retroarch-for-windows-version-1.9.0
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Jun. 28, 2022

    Action Type Old Value New Value
    Changed CWE CWE-77 CWE-78
  • Modified Analysis by [email protected]

    May. 27, 2022

    Action Type Old Value New Value
    Changed Reference Type https://labs.bishopfox.com/advisories/retroarch-for-windows-version-1.9.0 No Types Assigned https://labs.bishopfox.com/advisories/retroarch-for-windows-version-1.9.0 Exploit, Third Party Advisory
    Changed CPE Configuration AND OR *cpe:2.3:a:libretro:retroarch:1.9.0:*:*:*:*:*:*:* OR cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* AND OR *cpe:2.3:a:libretro:retroarch:*:*:*:*:*:*:*:* versions from (including) 1.9.0 up to (including) 1.9.4 OR cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jun. 16, 2021

    Action Type Old Value New Value
    Added Reference https://labs.bishopfox.com/advisories/retroarch-for-windows-version-1.9.0 [No Types Assigned]
  • Modified Analysis by [email protected]

    Apr. 27, 2021

    Action Type Old Value New Value
    Changed Reference Type http://libretro.com Vendor Advisory http://libretro.com Exploit, Vendor Advisory
    Changed Reference Type http://retroarch.com Product http://retroarch.com Product, Vendor Advisory
    Changed CPE Configuration AND OR *cpe:2.3:a:libretro:retroarch:0.11:*:*:*:*:*:*:* OR cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* AND OR *cpe:2.3:a:libretro:retroarch:1.9.0:*:*:*:*:*:*:* OR cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Apr. 26, 2021

    Action Type Old Value New Value
    Changed Description The text-to-speech engine in libretro RetroArch for Windows 0.11 passes unsanitized input to PowerShell through platform_win32.c via the accessibility_speak_windows function, which allows attackers who have write access on filesystems that are used by RetroArch to execute code via command injection using specially a crafted file and directory names. The text-to-speech engine in libretro RetroArch for Windows 1.9.0 passes unsanitized input to PowerShell through platform_win32.c via the accessibility_speak_windows function, which allows attackers who have write access on filesystems that are used by RetroArch to execute code via command injection using specially a crafted file and directory names.
  • Initial Analysis by [email protected]

    Apr. 14, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://libretro.com No Types Assigned http://libretro.com Vendor Advisory
    Changed Reference Type http://retroarch.com No Types Assigned http://retroarch.com Product
    Changed Reference Type https://github.com/libretro/RetroArch/blob/d3dc3ee989ec6a4903c689907ffc47027f71f776/frontend/drivers/platform_win32.c No Types Assigned https://github.com/libretro/RetroArch/blob/d3dc3ee989ec6a4903c689907ffc47027f71f776/frontend/drivers/platform_win32.c Patch, Third Party Advisory
    Added CWE NIST CWE-77
    Added CPE Configuration AND OR *cpe:2.3:a:libretro:retroarch:0.11:*:*:*:*:*:*:* OR cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-28927 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.25 }} 0.03%

score

0.63771

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability