Vulnerability · Published Nov 19, 2021 · Assigned by @huntrdev
CVE-2021-3968Heap-based Buffer Overflow in vim/vim
High 8.0
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 2.2% (higher than 83% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.0)8.0High
Exploit odds (30 days)2.2%top 17.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
vim is vulnerable to Heap-based Buffer Overflow
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | vim | 8.2.3650-r0 | ALPINE-CVE-2021-3968 |
| Alpine:v3.21 | vim | 8.2.3650-r0 | ALPINE-CVE-2021-3968 |
| Alpine:v3.22 | vim | 8.2.3650-r0 | ALPINE-CVE-2021-3968 |
| Alpine:v3.23 | vim | 8.2.3650-r0 | ALPINE-CVE-2021-3968 |
| Alpine:v3.24 | vim | 8.2.3650-r0 | ALPINE-CVE-2021-3968 |
| Debian:12 | vim | 2:8.2.3995-1 | DEBIAN-CVE-2021-3968 |
| Debian:13 | vim | 2:8.2.3995-1 | DEBIAN-CVE-2021-3968 |
| Debian:14 | vim | 2:8.2.3995-1 | DEBIAN-CVE-2021-3968 |
| Ubuntu:22.04:LTS | vim | 2:8.2.3995-1ubuntu2.1 | UBUNTU-CVE-2021-3968 |
Affected products (as reported)
Weakness: CWE-122 · Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
References
- https://huntr.dev/bounties/00d62924-a7b4-4a61-ba29-acab2eaa1528 x_refsource_CONFIRM
- https://github.com/vim/vim/commit/a062006b9de0b2947ab5fb376c6e67ef92a8cd69 x_refsource_MISC
- FEDORA-2021-5cd9df120e 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
- GLSA-202208-32 vendor-advisory, x_refsource_GENTOO