CVE-2021-3973: Heap-based Buffer Overflow in vim/vim
First published: Fri Nov 19 2021(Updated: )
Last updated 21 August 2024
Credit: security@huntr.dev security@huntr.dev
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Vim Vim | <8.2.3611 | |
| Fedoraproject Fedora | =34 | |
| Fedoraproject Fedora | =35 | |
| Debian Debian Linux | =9.0 | |
| debian/vim | <=2:8.2.2434-3+deb11u1 | 2:9.0.1378-2 2:9.1.0861-1 |
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Reference Links
- https://huntr.dev/bounties/ce6e8609-77c6-4e17-b9fc-a2e5abed052e
- https://github.com/vim/vim/commit/615ddd5342b50a6878a907062aa471740bd9a847
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IH2LS2DXBTYOCWGAKFMBF3HTWWXPBEFL/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/
- http://www.openwall.com/lists/oss-security/2022/01/15/1
- https://lists.debian.org/debian-lts-announce/2022/03/msg00018.html
- https://security.gentoo.org/glsa/202208-32
- https://launchpad.net/bugs/cve/CVE-2021-3973
- 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/IH2LS2DXBTYOCWGAKFMBF3HTWWXPBEFL/
- https://security-tracker.debian.org/tracker/CVE-2021-3973
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3973
- https://nvd.nist.gov/vuln/detail/CVE-2021-3973
- https://ubuntu.com/security/CVE-2021-3973
Frequently Asked Questions
What is CVE-2021-3973?
CVE-2021-3973 is a vulnerability in vim that allows for a heap-based buffer overflow.
How does CVE-2021-3973 affect vim?
CVE-2021-3973 affects vim by allowing an attacker to overflow the heap-based buffer, potentially leading to arbitrary code execution.
What is the severity of CVE-2021-3973?
The severity of CVE-2021-3973 is high.
Which versions of vim are affected by CVE-2021-3973?
Versions of vim up to 8.2.3611 are affected by CVE-2021-3973.
How can I fix CVE-2021-3973?
To fix CVE-2021-3973, update vim to version 8.2.3611 or later.
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