CVE-2020-6113 : Security Advisory and Response
Learn about CVE-2020-6113, an integer overflow vulnerability in Nitro Pro 13.13.2.242 and 13.16.2.300. Understand the impact, affected systems, exploitation method, and mitigation steps.
An exploitable vulnerability exists in the object stream parsing functionality of Nitro Software, Inc.’s Nitro Pro 13.13.2.242 when updating its cross-reference table. This vulnerability can lead to memory corruption and potential code execution.
Understanding CVE-2020-6113
This CVE involves an integer overflow vulnerability in Nitro Pro, potentially allowing an attacker to execute arbitrary code.
What is CVE-2020-6113?
The vulnerability in Nitro Pro arises from errors in calculating memory allocation sizes, leading to a buffer overflow that can be exploited through a specially crafted PDF document.
The Impact of CVE-2020-6113
- CVSS Base Score: 8.8 (High)
- Severity: High
- Attack Vector: Network
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
- User Interaction: Required
- Privileges Required: None
- Scope: Unchanged
Technical Details of CVE-2020-6113
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability occurs in the object stream parsing functionality of Nitro Pro 13.13.2.242 during the update of its cross-reference table. Errors in calculating memory allocation sizes can lead to an undersized buffer being allocated, resulting in memory corruption and potential code execution.
Affected Systems and Versions
- Affected Product: Nitro Pro
- Affected Versions: Nitro Pro 13.13.2.242, Nitro Pro 13.16.2.300
Exploitation Mechanism
The vulnerability can be exploited by delivering a specially crafted PDF document to a victim, triggering the integer overflow and subsequent memory corruption.
Mitigation and Prevention
To address CVE-2020-6113, follow these mitigation strategies:
Immediate Steps to Take
- Update Nitro Pro to the latest version.
- Avoid opening PDFs from untrusted or unknown sources.
- Implement network security measures to detect malicious PDFs.
Long-Term Security Practices
- Regularly update software and security patches.
- Educate users on safe browsing habits and the risks associated with opening unknown files.
Patching and Updates
Ensure that Nitro Pro is regularly updated with the latest security patches to mitigate the risk of exploitation.