CVE-2019-25051 Explained : Impact and Mitigation
Learn about CVE-2019-25051, a critical heap-based buffer overflow vulnerability in GNU Aspell 0.60.8. Find out the impact, affected systems, exploitation details, and mitigation steps.
In GNU Aspell 0.60.8, a heap-based buffer overflow vulnerability exists in the objstack component. This flaw is specifically present in the dup_top function of acommon::ObjStack, which is invoked by the add function of acommon::StringMap and the lookup_list function of acommon::Config.
Understanding CVE-2019-25051
This CVE identifier pertains to a critical vulnerability in GNU Aspell 0.60.8 that allows for a heap-based buffer overflow.
What is CVE-2019-25051?
This CVE describes a specific vulnerability in the objstack of GNU Aspell 0.60.8, leading to a heap-based buffer overflow in the dup_top function.
The Impact of CVE-2019-25051
The vulnerability can be exploited to trigger a heap-based buffer overflow, potentially leading to arbitrary code execution or denial of service.
Technical Details of CVE-2019-25051
The technical aspects of the CVE include:
Vulnerability Description
The vulnerability is a heap-based buffer overflow in the dup_top function of acommon::ObjStack in GNU Aspell 0.60.8.
Affected Systems and Versions
- Product: GNU Aspell
- Version: 0.60.8
Exploitation Mechanism
The vulnerability can be exploited through the add function of acommon::StringMap and the lookup_list function of acommon::Config.
Mitigation and Prevention
To address CVE-2019-25051, consider the following steps:
Immediate Steps to Take
- Apply the latest security updates provided by the vendor.
- Monitor vendor advisories and security mailing lists for patches.
Long-Term Security Practices
- Regularly update software and libraries to the latest versions.
- Implement secure coding practices to prevent buffer overflows.
Patching and Updates
- Install patches and updates released by GNU Aspell promptly to mitigate the vulnerability.