CVE-2024-43495: Windows libarchive Remote Code Execution Vulnerability

Overview

Severity
High (CVSS 7.3)
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Category
Remote Code Execution
Exploit Status
Not Exploited
Exploitation Likelihood
Less Likely
Patch Tuesday
2024-Sep
Released
2024-09-10
EPSS Score
1.31% (percentile: 79.8%)

FAQ

According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is a remote code execution? The word Remote in the title refers to the location of the attacker. This type of exploit is sometimes referred to as Arbitrary Code Execution (ACE). The attack itself is carried out locally. This means an attacker or victim needs to execute code from the local machine to exploit the vulnerability. According to the CVSS metric, user interaction is required (UI:R) and privileges required is low (PR:L). What does that mean for this vulnerability? An authenticated attacker with guest privileges must send the victim a malicious RAR file and convince them to open it.

Affected Products (5)

Windows

  • Windows 11 Version 22H2 for ARM64-based Systems
  • Windows 11 Version 22H2 for x64-based Systems
  • Windows 11 Version 23H2 for ARM64-based Systems
  • Windows 11 Version 23H2 for x64-based Systems
  • Windows Server 2022, 23H2 Edition (Server Core installation)

Security Updates (2)

Acknowledgments

<a href="https://twitter.com/edwardzpeng">wh1tc &amp; Zhiniang Peng</a>, HAO LI with Venustech ADLab

Revision History

  • 2024-09-10: Information published. This CVE was addressed by updates that were released in July 2024, but the CVE was inadvertently omitted from the July 2024 Security Updates. This is an informational change only. Customers who have already installed the July 2024 updates do not need to take any further action.