CVE-2020-13398 : Security Advisory and Response

An out-of-bounds write vulnerability has been detected in FreeRDP before version 2.1.1, specifically in crypto_rsa_common in libfreerdp/crypto/crypto.c.

Understanding CVE-2020-13398

This CVE identifies a critical security issue in FreeRDP that could potentially lead to exploitation.

What is CVE-2020-13398?

CVE-2020-13398 is an out-of-bounds write vulnerability found in FreeRDP before version 2.1.1, affecting the crypto_rsa_common function in libfreerdp/crypto/crypto.c.

The Impact of CVE-2020-13398

This vulnerability could be exploited by an attacker to write beyond the bounds of allocated memory, potentially leading to remote code execution or a denial of service.

Technical Details of CVE-2020-13398

FreeRDP versions prior to 2.1.1 are susceptible to this vulnerability.

Vulnerability Description

The issue arises from improper bounds checking in the crypto_rsa_common function, allowing an out-of-bounds write.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Vulnerable Versions: All versions before 2.1.1

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious input to trigger the out-of-bounds write, potentially leading to a security compromise.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent exploitation of CVE-2020-13398.

Immediate Steps to Take

Update FreeRDP to version 2.1.1 or later to mitigate the vulnerability.
Monitor security advisories from relevant vendors for patches and updates.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Conduct security assessments and audits to identify and address vulnerabilities proactively.
Implement network segmentation and access controls to limit the impact of potential attacks.

Patching and Updates

Ensure all systems running FreeRDP are updated to version 2.1.1 or above to eliminate the vulnerability.