CVE-2019-7149 : Exploit Details and Defense Strategies
Discover the impact of CVE-2019-7149, a buffer over-read vulnerability in elfutils version 0.175, potentially leading to denial-of-service attacks. Learn about affected systems, exploitation mechanisms, and mitigation steps.
An issue was found in elfutils version 0.175 where a buffer over-read occurs in the read_srclines function in dwarf_getsrclines.c within the libdw library. This vulnerability can lead to denial-of-service attacks.
Understanding CVE-2019-7149
This CVE involves a heap-based buffer over-read in the libdw library of elfutils version 0.175, potentially resulting in segmentation faults and denial-of-service.
What is CVE-2019-7149?
CVE-2019-7149 is a vulnerability in elfutils version 0.175 that allows for a buffer over-read in the read_srclines function, leading to potential denial-of-service attacks.
The Impact of CVE-2019-7149
The vulnerability can be exploited by crafting specific inputs, resulting in segmentation faults and potentially leading to denial-of-service conditions.
Technical Details of CVE-2019-7149
This section provides more technical insights into the vulnerability.
Vulnerability Description
A heap-based buffer over-read was discovered in the function read_srclines in dwarf_getsrclines.c in libdw in elfutils 0.175. Crafted input can cause segmentation faults, potentially leading to denial-of-service.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by providing specifically crafted inputs to the read_srclines function, triggering buffer over-read and potential denial-of-service.
Mitigation and Prevention
Protecting systems from CVE-2019-7149 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply patches and updates provided by the respective vendors.
- Monitor vendor advisories for security alerts related to elfutils.
Long-Term Security Practices
- Regularly update software and libraries to the latest versions.
- Conduct security assessments and audits to identify and mitigate similar vulnerabilities.
Patching and Updates
- Refer to vendor-specific security advisories for patching instructions and updates.