CVE-2021-38177 : Vulnerability Insights and Analysis
Learn about CVE-2021-38177, a high severity null pointer dereference vulnerability in SAP CommonCryptoLib <= 8.5.38. Understand the impact, technical details, mitigation steps, and prevention measures.
A null pointer dereference vulnerability has been identified in SAP CommonCryptoLib version 8.5.38 or lower. This vulnerability can be exploited by an unauthenticated attacker to crash the SAP application, impacting the system's availability.
Understanding CVE-2021-38177
This section will delve into the details surrounding the CVE-2021-38177 vulnerability.
What is CVE-2021-38177?
SAP CommonCryptoLib version 8.5.38 or lower is susceptible to a null pointer dereference vulnerability. An attacker can exploit this by sending crafted malicious data in HTTP requests, leading to a system crash.
The Impact of CVE-2021-38177
The vulnerability has a CVSS base score of 7.5, categorizing it as a high severity issue. It poses a significant threat to the availability of SAP systems.
Technical Details of CVE-2021-38177
In this section, we will explore the technical aspects of CVE-2021-38177.
Vulnerability Description
The vulnerability arises due to a null pointer dereference issue in SAP CommonCryptoLib version 8.5.38 or lower, triggered by specially crafted data in HTTP requests.
Affected Systems and Versions
SAP CommonCryptoLib versions <= 8.5.38 are impacted by this vulnerability, making them susceptible to exploitation.
Exploitation Mechanism
An unauthenticated attacker can exploit this vulnerability by sending malicious data in HTTP requests over the network, causing the SAP application to crash.
Mitigation and Prevention
This section will outline the steps to mitigate and prevent exploitation of CVE-2021-38177.
Immediate Steps to Take
- Update the SAP CommonCryptoLib to version 8.5.39 or higher to patch the vulnerability.
- Implement network security measures to filter out malicious HTTP requests.
Long-Term Security Practices
- Regularly monitor security advisories from SAP and apply patches promptly.
- Conduct security audits to identify and address potential vulnerabilities proactively.
Patching and Updates
Ensure timely installation of security patches and updates for SAP CommonCryptoLib to safeguard the system against known vulnerabilities.