CVE-2019-6488 : Security Advisory and Response
Discover the impact of CVE-2019-6488, a vulnerability in the GNU C Library affecting versions up to 2.28 on the x32 architecture. Learn about mitigation strategies and preventive measures.
In the GNU C Library (also known as glibc or libc6), a vulnerability exists in versions up to 2.28 when operating on the x32 architecture. This flaw can lead to a segmentation fault or other unintended consequences due to incorrect usage of a 64-bit register for the size_t variable in assembly codes.
Understanding CVE-2019-6488
This CVE entry was published on January 18, 2019, highlighting a critical issue in the GNU C Library.
What is CVE-2019-6488?
The vulnerability in the GNU C Library arises from misusing a 64-bit register for the size_t variable in assembly codes when running on the x32 architecture. This misuse can result in a segmentation fault or other unexpected outcomes.
The Impact of CVE-2019-6488
The vulnerability poses a risk of a segmentation fault or other unintended consequences, potentially leading to system crashes during specific operations.
Technical Details of CVE-2019-6488
This section delves into the technical aspects of the CVE-2019-6488 vulnerability.
Vulnerability Description
The flaw in the GNU C Library occurs in versions up to 2.28 when operating on the x32 architecture. Incorrectly utilizing a 64-bit register for the size_t variable in assembly codes is the root cause of the vulnerability.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: Up to version 2.28
Exploitation Mechanism
The vulnerability can be exploited by manipulating the size_t variable in assembly codes, leading to a crash in specific functions during memory operations.
Mitigation and Prevention
To address CVE-2019-6488, follow these mitigation strategies:
Immediate Steps to Take
- Apply patches provided by the GNU C Library promptly.
- Monitor security advisories for updates and apply them as soon as they are available.
Long-Term Security Practices
- Regularly update the GNU C Library to the latest version.
- Conduct security assessments and audits to identify and address vulnerabilities proactively.
Patching and Updates
- Stay informed about security patches released by the GNU C Library.
- Implement a robust patch management process to ensure timely application of updates.