CVE-2019-9070 : What You Need to Know
Learn about CVE-2019-9070, a heap-based buffer over-read vulnerability in GNU libiberty package included in GNU Binutils version 2.32. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
A problem has been identified in the GNU libiberty package, included in GNU Binutils version 2.32, leading to a heap-based buffer over-read vulnerability.
Understanding CVE-2019-9070
What is CVE-2019-9070?
CVE-2019-9070 is a vulnerability in the GNU libiberty package, specifically in the function d_expression_1 within the file cp-demangle.c, resulting in a buffer over-read issue.
The Impact of CVE-2019-9070
The vulnerability allows an attacker to read beyond the bounds of a buffer stored in the heap after numerous recursive function calls, potentially leading to information disclosure or denial of service.
Technical Details of CVE-2019-9070
Vulnerability Description
The issue involves a heap-based buffer over-read in the function d_expression_1 within the file cp-demangle.c of GNU Binutils version 2.32.
Affected Systems and Versions
- Product: GNU Binutils version 2.32
- Vendor: GNU
- Versions: All versions are affected
Exploitation Mechanism
The vulnerability occurs due to reading beyond the buffer's bounds stored in the heap, triggered by a significant number of recursive function calls.
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor patches and updates promptly
- Monitor vendor advisories for security patches
- Implement least privilege access controls
Long-Term Security Practices
- Regularly update software and libraries
- Conduct security assessments and code reviews
- Employ intrusion detection and prevention systems
Patching and Updates
- Update to the latest version of GNU Binutils to mitigate the vulnerability