CVE-2021-40776 Explained : Impact and Mitigation
Learn about CVE-2021-40776 impacting Adobe Lightroom Classic versions 10.3 and earlier. Understand the vulnerability, its impact, and mitigation steps.
Adobe Lightroom Classic DLL Hijacking Local Privilege Escalation Vulnerability was published on October 26, 2021, affecting versions 10.3 and earlier, potentially allowing an authenticated attacker to escalate privileges by abusing the Offline Lightroom Classic installer.
Understanding CVE-2021-40776
This CVE impacts Adobe Lightroom Classic installations, posing a risk of privilege escalation with user interaction required for the attack.
What is CVE-2021-40776?
The vulnerability in Adobe Lightroom Classic versions 10.3 and under could enable an authenticated attacker to escalate privileges through the Offline Lightroom Classic installer.
The Impact of CVE-2021-40776
The privilege escalation vulnerability in Adobe Lightroom Classic could lead to unauthorized elevation of privileges by an attacker, potentially compromising system integrity, confidentiality, and availability.
Technical Details of CVE-2021-40776
Adobe Lightroom Classic DLL Hijacking Local Privilege Escalation Vulnerability details:
Vulnerability Description
- Vulnerability Type: DLL Hijacking Local Privilege Escalation
- CVE ID: CVE-2021-40776
- CWE ID: CWE-379 (Creation of Temporary File in Directory with Incorrect Permissions)
Affected Systems and Versions
- Affected Vendor: Adobe
- Affected Product: Lightroom Classic
- Affected Versions: 10.3 and earlier
Exploitation Mechanism
The vulnerability involves an authenticated attacker leveraging the Offline Lightroom Classic installer to escalate privileges through user interaction during product installation.
Mitigation and Prevention
Steps to secure systems from CVE-2021-40776:
Immediate Steps to Take
- Update Adobe Lightroom Classic to the latest version.
- Ensure no unauthorized installations occur.
- Monitor system privileges and access rights.
Long-Term Security Practices
- Implement principle of least privilege.
- Regularly update and patch software.
- Conduct security awareness training.
Patching and Updates
- Install security patches provided by Adobe.
- Keep systems up-to-date with the latest software releases.