SB20250120104 - Fedora 40 update for dotnet9.0
Published: January 20, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Heap-based buffer overflow (CVE-ID: CVE-2025-21171)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in .NET. A remote attacker can pass specially crafted data to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
2) Integer overflow (CVE-ID: CVE-2025-21172)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow in .NET and Visual Studio. A remote attacker can trick a victim to open a specially crafted file, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
3) Creation of temporary file in directory with insecure permissions (CVE-ID: CVE-2025-21173)
The vulnerability allows a local user to escalate privilege on the target system.
The vulnerability exists due to creation of temporary file in directory with insecure permissions in .NET. A local user can overwrite arbitrary file content and gain elevated privileges on the system.
4) Out-of-bounds read (CVE-ID: CVE-2025-21176)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in .NET, .NET Framework and Visual Studio. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger an out-of-bounds read error and read contents of memory on the system, leading to arbitrary code execution.
Remediation
Install update from vendor's website.