CVE-2019-7665 : What You Need to Know
Discover the impact of CVE-2019-7665, a buffer over-read vulnerability in elfutils 0.175, leading to denial of service. Learn about affected systems, exploitation, and mitigation steps.
A vulnerability was found in elfutils 0.175, leading to a denial of service due to a buffer over-read in the libelf library.
Understanding CVE-2019-7665
What is CVE-2019-7665?
In elfutils 0.175, a buffer over-read occurs in the function elf32_xlatetom in the libelf library, potentially triggering a segmentation fault.
The Impact of CVE-2019-7665
The vulnerability can result in a denial of service (program crash) by manipulating an ELF input, causing ebl_core_note to fail in rejecting malformed core file notes.
Technical Details of CVE-2019-7665
Vulnerability Description
A heap-based buffer over-read was discovered in elf32_xlatetom.c in libelf, allowing a crafted ELF input to cause a segmentation fault.
Affected Systems and Versions
- Product: n/a
- Vendor: n/a
- Version: 0.175
Exploitation Mechanism
The vulnerability can be exploited by manipulating an ELF input to trigger a segmentation fault, leading to a denial of service.
Mitigation and Prevention
Immediate Steps to Take
- Apply security updates provided by the vendor
- Monitor vendor advisories for patches
Long-Term Security Practices
- Regularly update software and libraries
- Implement secure coding practices
Patching and Updates
Ensure to apply the security update released by elfutils to address the buffer over-read vulnerability.