CVE-2017-7609 : Exploit Details and Defense Strategies
Learn about CVE-2017-7609, a vulnerability in elf_compress.c of elfutils version 0.168 allowing remote attackers to trigger a denial of service condition via a specially crafted ELF file. Find mitigation steps here.
elf_compress.c in elfutils version 0.168 has a vulnerability that allows remote attackers to trigger a denial of service condition due to excessive memory consumption when processing a specially crafted ELF file.
Understanding CVE-2017-7609
This CVE entry describes a vulnerability in the zlib compression factor of elf_compress.c in elfutils version 0.168.
What is CVE-2017-7609?
The vulnerability in elf_compress.c of elfutils version 0.168 allows remote attackers to cause a denial of service condition by consuming excessive memory through a specially crafted ELF file.
The Impact of CVE-2017-7609
The vulnerability can be exploited by remote attackers to trigger a denial of service condition characterized by excessive memory consumption when processing a specially crafted ELF file.
Technical Details of CVE-2017-7609
elf_compress.c in elfutils version 0.168 has a vulnerability related to zlib compression factor.
Vulnerability Description
The zlib compression factor in elf_compress.c of elfutils version 0.168 does not undergo validation, leading to a denial of service condition due to excessive memory consumption.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
The issue arises when a specially crafted ELF file is processed, allowing remote attackers to exploit the vulnerability.
Mitigation and Prevention
Steps to address and prevent the CVE-2017-7609 vulnerability.
Immediate Steps to Take
- Apply security patches provided by the vendor promptly.
- Monitor for any unusual memory consumption patterns.
- Implement network-level controls to detect and block malicious ELF files.
Long-Term Security Practices
- Regularly update and patch all software components.
- Conduct security assessments and audits to identify vulnerabilities.
- Educate users and administrators about safe file handling practices.
Patching and Updates
Ensure that elfutils version 0.168 is updated with the latest security patches to mitigate the vulnerability.