Vulnerability · Published Oct 27, 2021 · Assigned by @huntrdev
CVE-2021-3903Heap-based Buffer Overflow in vim/vim
High 7.3
In plain English
A high-severity heap buffer overflow in vim/vim from vim. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.0)7.3High
Exploit odds (30 days)0.6%top 48.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
vim is vulnerable to Heap-based Buffer Overflow
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:9 | vim-X11 | 2:8.2.2637-21.el9 | ALSA-2024:9405 |
| AlmaLinux:9 | vim-common | 2:8.2.2637-21.el9 | ALSA-2024:9405 |
| AlmaLinux:9 | vim-enhanced | 2:8.2.2637-21.el9 | ALSA-2024:9405 |
| AlmaLinux:9 | vim-filesystem | 2:8.2.2637-21.el9 | ALSA-2024:9405 |
| AlmaLinux:9 | vim-minimal | 2:8.2.2637-21.el9 | ALSA-2024:9405 |
| Alpine:v3.20 | vim | 8.2.3567-r0 | ALPINE-CVE-2021-3903 |
| Alpine:v3.21 | vim | 8.2.3567-r0 | ALPINE-CVE-2021-3903 |
| Alpine:v3.22 | vim | 8.2.3567-r0 | ALPINE-CVE-2021-3903 |
| Alpine:v3.23 | vim | 8.2.3567-r0 | ALPINE-CVE-2021-3903 |
| Alpine:v3.24 | vim | 8.2.3567-r0 | ALPINE-CVE-2021-3903 |
| Debian:12 | vim | 2:8.2.3565-1 | DEBIAN-CVE-2021-3903 |
| Debian:13 | vim | 2:8.2.3565-1 | DEBIAN-CVE-2021-3903 |
| Debian:14 | vim | 2:8.2.3565-1 | DEBIAN-CVE-2021-3903 |
| Rocky Linux:9 | vim | 2:8.2.2637-21.el9 | RLSA-2024:9405 |
| Ubuntu:22.04:LTS | vim | 2:8.2.3565-1ubuntu2 | UBUNTU-CVE-2021-3903 |
Affected products (as reported)
Weakness: CWE-122 · Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H
References
- https://huntr.dev/bounties/35738a4f-55ce-446c-b836-2fb0b39625f8 x_refsource_CONFIRM
- https://github.com/vim/vim/commit/777e7c21b7627be80961848ac560cb0a9978ff43 x_refsource_MISC
- FEDORA-2021-af135cabe2 vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-a5e55a9e02 vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-b0ac29efb1 vendor-advisory, x_refsource_FEDORA
- [oss-security] 20220114 Re: 3 new CVE's in vim mailing-list, x_refsource_MLIST
- [debian-lts-announce] 20220620 [SECURITY] [DLA 3053-1] vim security update mailing-list, x_refsource_MLIST