CWE
476
Advisory Published
Updated

CVE-2021-42202: Null Pointer Dereference

First published: Tue May 31 2022(Updated: )

An issue was discovered in swftools through 20201222. A NULL pointer dereference exists in the function swf_DeleteFilter() located in swffilter.c. It allows an attacker to cause Denial of Service.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
SWFTools<=2020-12-22

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Frequently Asked Questions

  • What is the severity of CVE-2021-42202?

    CVE-2021-42202 is classified as a Denial of Service vulnerability.

  • How do I fix CVE-2021-42202?

    To fix CVE-2021-42202, upgrade SWFTools to a version later than 20201222.

  • What is affected by CVE-2021-42202?

    CVE-2021-42202 affects SWFTools versions up to and including 2020-12-22.

  • What causes the vulnerability in CVE-2021-42202?

    CVE-2021-42202 is caused by a NULL pointer dereference in the swf_DeleteFilter() function.

  • Can CVE-2021-42202 be exploited remotely?

    Yes, CVE-2021-42202 can be exploited by attackers to trigger a Denial of Service from a remote location.

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