CVE-2021-40401: Use After Free
First published: Fri Feb 04 2022(Updated: )
A use-after-free vulnerability exists in the RS-274X aperture definition tokenization functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and Gerbv forked 2.7.1. A specially-crafted gerber file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.
Credit: talos-cna@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/gerbv | <=2.7.0-1+deb10u1 | 2.7.0-1+deb10u3 2.7.0-2+deb11u2 2.9.6-1 2.10.0-1 |
| Gerbv | =2.7.0 | |
| Gerbv | =2.7.1-forked_dev | |
| Red Hat Fedora | =36 | |
| Debian Linux | =11.0 |
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Reference Links
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1415
- https://github.com/gerbv/gerbv/commit/68ee18945bcf68ff964c42f12af79c5c0e2f4069
- https://github.com/gerbv/gerbv/issues/81
- https://security-tracker.debian.org/tracker/CVE-2021-40401
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUM5GIUZJ7AVHVCXDZW6ZVCAPV2ISN47/
- https://www.debian.org/security/2022/dsa-5306
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUM5GIUZJ7AVHVCXDZW6ZVCAPV2ISN47/
Frequently Asked Questions
What is the severity of CVE-2021-40401?
CVE-2021-40401 is considered to have a high severity due to its potential for code execution through specially crafted Gerber files.
How do I fix CVE-2021-40401?
To fix CVE-2021-40401, upgrade to versions 2.7.1-forked_dev or later for Gerbv.
Which software versions are affected by CVE-2021-40401?
CVE-2021-40401 affects Gerbv versions up to and including 2.7.0 and the forked version 2.7.1.
Can CVE-2021-40401 be exploited remotely?
Yes, CVE-2021-40401 can be exploited remotely if an attacker provides a malicious Gerber file.
What kind of attack is CVE-2021-40401 associated with?
CVE-2021-40401 is associated with a use-after-free vulnerability leading to potential code execution.
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