CVE-2021-3903: Heap-based Buffer Overflow in vim/vim
First published: Wed Oct 27 2021(Updated: )
Last updated 24 July 2024
Credit: security@huntr.dev security@huntr.dev
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Vim Vim | <8.2.3564 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =34 | |
| Fedoraproject Fedora | =35 | |
| Debian Debian Linux | =9.0 | |
| debian/vim | <=2:8.2.2434-3+deb11u1 | 2:9.0.1378-2 2:9.1.0709-2 |
| redhat/vim | <8.2.3564 | 8.2.3564 |
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Reference Links
- https://huntr.dev/bounties/35738a4f-55ce-446c-b836-2fb0b39625f8
- https://github.com/vim/vim/commit/777e7c21b7627be80961848ac560cb0a9978ff43
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DU26T75PYA3OF7XJGNKMT2ZCQEU4UKP5/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BN4EX7BPQU7RP6PXCNCSDORUZBXQ4JUH/
- 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/2022/06/msg00014.html
- https://launchpad.net/bugs/cve/CVE-2021-3903
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BN4EX7BPQU7RP6PXCNCSDORUZBXQ4JUH/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DU26T75PYA3OF7XJGNKMT2ZCQEU4UKP5/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3903
- https://nvd.nist.gov/vuln/detail/CVE-2021-3903
- https://security-tracker.debian.org/tracker/CVE-2021-3903
- https://ubuntu.com/security/CVE-2021-3903
- https://github.com/vim/vim/commit/8a7d6542b33e5d2b352262305c3bfdb2d14e1cf8
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2018559
- https://access.redhat.com/errata/RHSA-2024:9405
- https://bugzilla.redhat.com/show_bug.cgi?id=2018558
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2021-3903.
What software is affected by CVE-2021-3903?
The affected software is vim.
What is the severity rating of CVE-2021-3903?
The severity rating of CVE-2021-3903 is high (7.8).
How can I fix CVE-2021-3903?
To fix CVE-2021-3903, ensure that you are using the recommended versions of vim: '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+', '8.2.3564', '2:7.4.1689-3ubuntu1.5+', '2:8.2.3565-1ubuntu2' for Ubuntu and '2:9.0.1378-2', '2:9.0.1894-1', '2:9.0.2018-1' for Debian. Install the latest available patches and updates.
Where can I find more information about CVE-2021-3903?
You can find more information about CVE-2021-3903 on the MITRE CVE database (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3903), the Huntr.dev website (https://huntr.dev/bounties/35738a4f-55ce-446c-b836-2fb0b39625f8), and the GitHub commit (https://github.com/vim/vim/commit/777e7c21b7627be80961848ac560cb0a9978ff43).
- agent/remedy
- collector/launchpad-cve
- source/Launchpad
- agent/type
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- vendor/vim
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- vendor/fedoraproject
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- version/fedoraproject fedora/33
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