CVE-2019-14873 : Security Advisory and Response
Learn about CVE-2019-14873, a vulnerability in the newlib libc library before version 3.3.0, leading to a null pointer dereference bug. Find out the impacted systems, exploitation details, and mitigation steps.
A vulnerability in the multadd function of the newlib libc library, before version 3.3.0, can lead to a null pointer dereference bug due to improper memory allocation handling.
Understanding CVE-2019-14873
This CVE involves a flaw in the newlib libc library that can result in a null pointer dereference bug.
What is CVE-2019-14873?
The multadd function in the newlib libc library, before version 3.3.0, does not properly handle memory allocation failures, potentially leading to a null pointer dereference bug.
The Impact of CVE-2019-14873
The vulnerability has a CVSS base score of 6.5, indicating a medium severity issue with high availability impact but no confidentiality or integrity impact. It requires low privileges and no user interaction.
Technical Details of CVE-2019-14873
This section provides more technical insights into the vulnerability.
Vulnerability Description
The multadd function in the newlib libc library fails to check the success of memory allocation using Balloc, leading to a null pointer dereference bug.
Affected Systems and Versions
- Product: newlib
- Vendor: Red Hat
- Affected Versions: All newlib versions prior to 3.3.0
Exploitation Mechanism
The vulnerability can be exploited by triggering a memory allocation failure, causing the multadd function to dereference a null pointer.
Mitigation and Prevention
Protecting systems from CVE-2019-14873 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply patches or updates provided by the vendor to mitigate the vulnerability.
- Monitor security advisories for any new information or updates related to this CVE.
Long-Term Security Practices
- Implement secure coding practices to prevent similar memory allocation issues in the future.
- Conduct regular security assessments and code reviews to identify and address vulnerabilities proactively.
Patching and Updates
- Red Hat has likely released patches addressing this vulnerability. Ensure that systems are updated with the latest security fixes to prevent exploitation.