Vulnerability · Published May 16, 2024 · Assigned by GitHub_M
CVE-2024-31226Sunshine's unquoted executable path could lead to hijacked execution flow
Medium 4.9
In plain English
A medium-severity security flaw in Sunshine from LizardByte. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).
Official description
Sunshine is a self-hosted game stream host for Moonlight. Users who ran Sunshine versions 0.17.0 through 0.22.2 as a service on Windows may be impacted when terminating the service if an attacked placed a file named `C:\Program.exe`, `C:\Program.bat`, or `C:\Program.cmd` on the user's computer. This attack vector isn't exploitable unless the user has manually loosened ACLs on the system drive. If the user's system locale is not English, then the name of the executable will likely vary. Version 0.23.0 contains a patch for the issue. Some workarounds are available. One may identify and block potentially malicious software executed path interception by using application control tools, like Windows Defender Application Control, AppLocker, or Software Restriction Policies where appropriate. Alternatively, ensure that proper permissions and directory access control are set to deny users the ability to write files to the top-level directory `C:`. Require that all executables be placed in write-protected directories.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| LizardByte | Sunshine | >= 0.17.0, < 0.23.0 |
Weakness: CWE-428 · Vector: CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:H
References
- https://github.com/LizardByte/Sunshine/security/advisories/GHSA-r3rw-mx4q-7vfp x_refsource_CONFIRM
- https://github.com/LizardByte/Sunshine/pull/2379 x_refsource_MISC
- https://github.com/LizardByte/Sunshine/commit/93e622342c4f3e9b34f5f265039b6775b8e33a7a x_refsource_MISC