Vulnerability · Published Sep 15, 2021 · Assigned by @huntrdev
CVE-2021-3796Use After Free in vim/vim
High 8.2
In plain English
A high-severity use-after-free 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 1.7% (higher than 78% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.0)8.2High
Exploit odds (30 days)1.7%top 22.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
vim is vulnerable to Use After Free
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | vim-X11 | 2:8.0.1763-16.el8 | ALSA-2021:4517 |
| AlmaLinux:8 | vim-X11 | 2:8.0.1763-16.el8_5.13 | ALSA-2021:4517 |
| AlmaLinux:8 | vim-common | 2:8.0.1763-16.el8_5.13 | ALSA-2021:4517 |
| AlmaLinux:8 | vim-common | 2:8.0.1763-16.el8 | ALSA-2021:4517 |
| AlmaLinux:8 | vim-enhanced | 2:8.0.1763-16.el8 | ALSA-2021:4517 |
| AlmaLinux:8 | vim-enhanced | 2:8.0.1763-16.el8_5.13 | ALSA-2021:4517 |
| AlmaLinux:8 | vim-filesystem | 2:8.0.1763-16.el8_5.13 | ALSA-2021:4517 |
| AlmaLinux:8 | vim-filesystem | 2:8.0.1763-16.el8 | ALSA-2021:4517 |
| AlmaLinux:8 | vim-minimal | 2:8.0.1763-16.el8_5.13 | ALSA-2021:4517 |
| Alpine:v3.20 | vim | 8.2.3437-r0 | ALPINE-CVE-2021-3796 |
| Alpine:v3.21 | vim | 8.2.3437-r0 | ALPINE-CVE-2021-3796 |
| Alpine:v3.22 | vim | 8.2.3437-r0 | ALPINE-CVE-2021-3796 |
| Alpine:v3.23 | vim | 8.2.3437-r0 | ALPINE-CVE-2021-3796 |
| Alpine:v3.24 | vim | 8.2.3437-r0 | ALPINE-CVE-2021-3796 |
| Debian:12 | vim | 2:8.2.3455-1 | DEBIAN-CVE-2021-3796 |
| Debian:13 | vim | 2:8.2.3455-1 | DEBIAN-CVE-2021-3796 |
| Debian:14 | vim | 2:8.2.3455-1 | DEBIAN-CVE-2021-3796 |
| Rocky Linux:8 | vim | 2:8.0.1763-16.el8 | RLSA-2021:4517 |
Affected products (as reported)
Weakness: CWE-416 · Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L
References
- https://huntr.dev/bounties/ab60b7f3-6fb1-4ac2-a4fa-4d592e08008d
- https://github.com/vim/vim/commit/35a9a00afcb20897d462a766793ff45534810dc3
- [oss-security] 20210930 3 new CVE's in vim mailing-list
- FEDORA-2021-968f57ec98 vendor-advisory
- FEDORA-2021-84f4cf3244 vendor-advisory
- FEDORA-2021-6988830606 vendor-advisory
- [debian-lts-announce] 20220110 [SECURITY] [DLA 2876-1] vim security update mailing-list
- GLSA-202208-32 vendor-advisory
- https://security.netapp.com/advisory/ntap-20221118-0004/