CVE-2019-15937 : Vulnerability Insights and Analysis
Learn about CVE-2019-15937, a vulnerability in Pengutronix barebox through 2019.08.1 that allows remote attackers to trigger a buffer overflow. Find out how to mitigate this issue.
Pengutronix barebox through version 2019.08.1 is susceptible to a remote buffer overflow in the nfs_readlink_reply function in net/nfs.c due to the direct use of a length field in a memcpy operation.
Understanding CVE-2019-15937
This CVE involves a vulnerability in Pengutronix barebox that could be exploited for a remote buffer overflow attack.
What is CVE-2019-15937?
The vulnerability in Pengutronix barebox, specifically version 2019.08.1, allows for a remote buffer overflow in the nfs_readlink_reply function in net/nfs.c. The issue arises from the direct utilization of a length field in a memcpy operation.
The Impact of CVE-2019-15937
This vulnerability could be exploited by remote attackers to execute arbitrary code or cause a denial of service (DoS) condition on the affected system.
Technical Details of CVE-2019-15937
Pengutronix barebox version 2019.08.1 is affected by this vulnerability.
Vulnerability Description
The vulnerability is a remote buffer overflow in the nfs_readlink_reply function in net/nfs.c due to the direct usage of a length field in a memcpy operation.
Affected Systems and Versions
- Product: Pengutronix barebox
- Version: 2019.08.1
Exploitation Mechanism
The vulnerability can be exploited remotely by manipulating the length field in a memcpy operation, potentially leading to a buffer overflow.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent exploitation of this vulnerability.
Immediate Steps to Take
- Apply the latest security patches provided by Pengutronix to mitigate the vulnerability.
- Monitor network traffic for any suspicious activities that could indicate an ongoing attack.
Long-Term Security Practices
- Regularly update and patch all software and firmware to prevent known vulnerabilities.
- Implement network segmentation and access controls to limit the impact of potential attacks.
Patching and Updates
Ensure that the Pengutronix barebox software is updated to a version that includes a fix for the remote buffer overflow vulnerability.