CVE-2017-18120 : What You Need to Know
Learn about CVE-2017-18120, a vulnerability in gifsicle 1.90 that allows remote attackers to exploit a double-free bug, potentially leading to denial-of-service attacks. Find mitigation steps and prevention measures here.
The read_gif function in the gifsicle version 1.90 contains a bug that could potentially lead to a double-free vulnerability, allowing a remote attacker to exploit it through a crafted file.
Understanding CVE-2017-18120
What is CVE-2017-18120?
The vulnerability in gifsicle 1.90 can result in a denial-of-service attack or other impacts due to mishandling of the last_name variable.
The Impact of CVE-2017-18120
The vulnerability can be exploited remotely by a malicious attacker, potentially causing a denial-of-service attack or other forms of impact.
Technical Details of CVE-2017-18120
Vulnerability Description
A double-free bug in the read_gif function in gifsicle 1.90 allows a remote attacker to cause a denial-of-service attack or unspecified other impact via a maliciously crafted file.
Affected Systems and Versions
- Product: N/A
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
The vulnerability can be exploited remotely by a malicious attacker through a specifically crafted file.
Mitigation and Prevention
Immediate Steps to Take
- Update gifsicle to a patched version to mitigate the vulnerability.
- Avoid opening untrusted GIF files.
Long-Term Security Practices
- Regularly update software and apply security patches.
- Implement network security measures to prevent remote exploitation.
Patching and Updates
Ensure that gifsicle is regularly updated to the latest version to address any security vulnerabilities.