CVE-2020-21683 : Security Advisory and Response
Discover the impact of CVE-2020-21683, a global buffer overflow vulnerability in fig2dev 3.2.7b allowing denial of service attacks. Learn about affected systems and mitigation steps.
A global buffer overflow in the shade_or_tint_name_after_declare_color in genpstricks.c of fig2dev 3.2.7b allows attackers to cause a denial of service (DOS) via converting a xfig file into pstricks format.
Understanding CVE-2020-21683
This CVE describes a vulnerability in fig2dev 3.2.7b that can be exploited to trigger a denial of service attack.
What is CVE-2020-21683?
The vulnerability stems from a buffer overflow in the shade_or_tint_name_after_declare_color function in genpstricks.c, enabling attackers to disrupt services by converting xfig files to pstricks format.
The Impact of CVE-2020-21683
The exploitation of this vulnerability can lead to a denial of service (DOS) attack, potentially causing system unavailability and disruption of services.
Technical Details of CVE-2020-21683
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
A global buffer overflow in the shade_or_tint_name_after_declare_color function in genpstricks.c of fig2dev 3.2.7b allows attackers to disrupt services by converting xfig files into pstricks format.
Affected Systems and Versions
- Affected System: fig2dev 3.2.7b
- Affected Version: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by malicious actors through the conversion of xfig files into pstricks format, triggering the buffer overflow and leading to a denial of service.
Mitigation and Prevention
Protecting systems from CVE-2020-21683 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by the vendor promptly.
- Implement network segmentation to limit the impact of potential attacks.
- Monitor system logs for any suspicious activities.
Long-Term Security Practices
- Conduct regular security assessments and penetration testing.
- Keep software and systems up to date with the latest security patches.
Patching and Updates
- Stay informed about security advisories related to fig2dev and apply patches as soon as they are released.