CVE-2020-28591 Explained : Impact and Mitigation

An out-of-bounds read vulnerability in Slic3r libslic3r 1.3.0 and Master Commit 92abbc42 can lead to information disclosure when processing specially crafted AMF files.

Understanding CVE-2020-28591

This CVE involves an out-of-bounds read vulnerability in Slic3r software, potentially allowing attackers to disclose sensitive information.

What is CVE-2020-28591?

The vulnerability exists in the AMF File AMFParserContext::endElement() function of Slic3r libslic3r 1.3.0 and Master Commit 92abbc42. Attackers can exploit this by providing a malicious AMF file.

The Impact of CVE-2020-28591

CVSS Base Score: 8.6 (High Severity)
Attack Vector: Network
Confidentiality Impact: High
Scope: Changed
Vector String: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Technical Details of CVE-2020-28591

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows for an out-of-bounds read in Slic3r, potentially leading to information disclosure.

Affected Systems and Versions

Affected Product: Slic3r
Affected Versions:
Slic3r libslic3r 1.3.0
Slic3r libslic3r Master Commit 92abbc42

Exploitation Mechanism

Attackers can exploit this vulnerability by providing a specially crafted AMF file to trigger the out-of-bounds read.

Mitigation and Prevention

Protecting systems from CVE-2020-28591 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Slic3r to a patched version.
Avoid opening AMF files from untrusted sources.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update software and firmware to the latest versions.
Implement network segmentation to limit the impact of potential attacks.
Conduct regular security audits and penetration testing.

Patching and Updates

Ensure that all systems running Slic3r are updated with the latest patches to mitigate the vulnerability.