Learn about CVE-2020-14382, a vulnerability in cryptsetup-2.2.0 allowing out-of-bounds write attacks. Find mitigation steps and prevention measures here.
A vulnerability was found in upstream release cryptsetup-2.2.0 where there's a bug in LUKS2 format validation code, allowing an attacker to craft an image that could lead to out-of-bounds write.
Understanding CVE-2020-14382
This CVE identifies a vulnerability in cryptsetup-2.2.0 that can be exploited through crafted images to perform out-of-bounds writes.
What is CVE-2020-14382?
The vulnerability lies in the segments validation code of the LUKS2 format in cryptsetup-2.2.0, enabling an attacker to manipulate memory allocation and potentially write data beyond the allocated memory space.
The Impact of CVE-2020-14382
The bug in the LUKS2 format validation code can be exploited by an attacker to trick the library into expecting a successful memory allocation, leading to potential data manipulation beyond the allocated memory.
Technical Details of CVE-2020-14382
This section provides detailed technical insights into the vulnerability.
Vulnerability Description
The bug in the segments validation code of the LUKS2 format in cryptsetup-2.2.0 allows for out-of-bounds write due to improper memory allocation checks.
Affected Systems and Versions
Exploitation Mechanism
The vulnerability can be exploited by crafting a malicious image that triggers the bug in the segments validation code, allowing for data manipulation beyond the allocated memory.
Mitigation and Prevention
Protecting systems from CVE-2020-14382 requires immediate actions and long-term security practices.
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates
Ensure that all systems running cryptsetup-2.2.0 are updated to a secure version that includes fixes for the LUKS2 format validation bug.