CVE-2021-3927: Heap-based Buffer Overflow in vim/vim
First published: Fri Nov 05 2021(Updated: )
Last updated 24 July 2024
Credit: security@huntr.dev security@huntr.dev
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Vim Vim | <8.2.3581 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =34 | |
| Fedoraproject Fedora | =35 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| debian/vim | <=2:8.2.2434-3+deb11u1 | 2:9.0.1378-2 2:9.1.0709-2 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2022/01/15/1
- https://github.com/vim/vim/commit/0b5b06cb4777d1401fdf83e7d48d287662236e7e
- https://huntr.dev/bounties/9c2b2c82-48bb-4be9-ab8f-a48ea252d1b0
- https://lists.debian.org/debian-lts-announce/2022/03/msg00018.html
- https://lists.debian.org/debian-lts-announce/2022/11/msg00009.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BCQWPEY2AEYBELCMJYHYWYCD3PZVD2H7/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PGW56Z6IN4UVM3E5RXXF4G7LGGTRBI5C/
- https://security.gentoo.org/glsa/202208-32
- https://launchpad.net/bugs/cve/CVE-2021-3927
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BCQWPEY2AEYBELCMJYHYWYCD3PZVD2H7/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PGW56Z6IN4UVM3E5RXXF4G7LGGTRBI5C/
- https://security-tracker.debian.org/tracker/CVE-2021-3927
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3927
- https://nvd.nist.gov/vuln/detail/CVE-2021-3927
- https://ubuntu.com/security/CVE-2021-3927
Frequently Asked Questions
What is CVE-2021-3927?
CVE-2021-3927 is a vulnerability in the vim text editor that allows for a heap-based buffer overflow.
How severe is CVE-2021-3927?
CVE-2021-3927 has a severity rating of 7.8 (High).
Which software versions are affected by CVE-2021-3927?
The affected versions of vim are 2:8.0.1453-1ubuntu1.7, 2:8.1.2269-1ubuntu5.4, 2:8.2.2434-1ubuntu1.2, 2:8.2.2434-3ubuntu3.1, 2:7.4.052-1ubuntu3.1+, 8.2.3581, 2:7.4.1689-3ubuntu1.5+, and 2:8.2.3565-1ubuntu2.
How can I fix CVE-2021-3927?
To fix CVE-2021-3927, you should update vim to version 2:8.1.0875-5+deb10u6, 2:9.0.1378-2, 2:9.0.1894-1, or 2:9.0.2018-1.
Where can I find more information about CVE-2021-3927?
You can find more information about CVE-2021-3927 at the following references: [CVE Mitre](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3927), [Huntr Dev](https://huntr.dev/bounties/9c2b2c82-48bb-4be9-ab8f-a48ea252d1b0), [GitHub Commit](https://github.com/vim/vim/commit/0b5b06cb4777d1401fdf83e7d48d287662236e7e).
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