Vulnerability · Published Nov 19, 2021 · Assigned by @huntrdev
CVE-2021-3973Heap-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 1.8% (higher than 79% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.0)7.3High
Exploit odds (30 days)1.8%top 21.4% 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-2021-3973 |
| Alpine:v3.21 | vim | 8.2.3650-r0 | ALPINE-CVE-2021-3973 |
| Alpine:v3.22 | vim | 8.2.3650-r0 | ALPINE-CVE-2021-3973 |
| Alpine:v3.23 | vim | 8.2.3650-r0 | ALPINE-CVE-2021-3973 |
| Alpine:v3.24 | vim | 8.2.3650-r0 | ALPINE-CVE-2021-3973 |
| Debian:12 | vim | 2:8.2.3995-1 | DEBIAN-CVE-2021-3973 |
| Debian:13 | vim | 2:8.2.3995-1 | DEBIAN-CVE-2021-3973 |
| Debian:14 | vim | 2:8.2.3995-1 | DEBIAN-CVE-2021-3973 |
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/ce6e8609-77c6-4e17-b9fc-a2e5abed052e x_refsource_CONFIRM
- https://github.com/vim/vim/commit/615ddd5342b50a6878a907062aa471740bd9a847 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
- [debian-lts-announce] 20220311 [SECURITY] [DLA 2947-1] vim security update mailing-list, x_refsource_MLIST
- GLSA-202208-32 vendor-advisory, x_refsource_GENTOO