CVE-2017-12993 : Security Advisory and Response
Discover the buffer over-read vulnerability in tcpdump prior to 4.9.2, allowing potential code execution or denial of service. Learn how to mitigate and prevent this security issue.
In versions of tcpdump prior to 4.9.2, a buffer over-read occurs in the Juniper protocols parser, specifically within the print-juniper.c file, affecting multiple functions.
Understanding CVE-2017-12993
What is CVE-2017-12993?
The Juniper protocols parser in tcpdump before version 4.9.2 experiences a buffer over-read vulnerability in the print-juniper.c file.
The Impact of CVE-2017-12993
This vulnerability could be exploited by an attacker to potentially execute arbitrary code or cause a denial of service (DoS) condition on the affected system.
Technical Details of CVE-2017-12993
Vulnerability Description
The buffer over-read vulnerability in the Juniper protocols parser within tcpdump versions prior to 4.9.2 allows for potential code execution or DoS attacks.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: All versions prior to 4.9.2
Exploitation Mechanism
The vulnerability arises due to improper handling of Juniper protocols in the print-juniper.c file, leading to a buffer over-read that could be exploited by malicious actors.
Mitigation and Prevention
Immediate Steps to Take
- Update tcpdump to version 4.9.2 or later to mitigate the vulnerability.
- Monitor vendor advisories and apply patches promptly.
Long-Term Security Practices
- Regularly update and patch software to address known vulnerabilities.
- Implement network segmentation and access controls to limit the impact of potential attacks.
Patching and Updates
- Refer to vendor advisories for patch availability and follow recommended update procedures.