vim/vim: Out-of-bounds Read
CVE-2022-1629 is a high-severity out-of-bounds read vulnerability in vim/vim from Vim, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. The record lists version 8.2.4925 as the first without the flaw, so updating vim/vim to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 1.91% chance of exploitation within 30 days, higher than 80% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update vim/vim to 8.2.4925 or a later version.
- Update Vim to 8.2.4925 or a later version.
- Update macOS to 13.0 or a later version.
- Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Vim | vim/vim | before 8.2.4925 | 8.2.4925 |
| Vim | Vim | before 8.2.4925 | 8.2.4925 |
| Fedora Project | Fedora | 34; 35 | Not stated |
| Apple | macOS | before 13.0 | 13.0 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- RequiredA user must take an action such as opening a file or link.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.8 | High | NVD |
| CVSS 3.0 | 6.6 | Medium | CNA (huntr.dev) |
| CVSS 2.0 | 6.8 | Medium | NVD |
Official description
Buffer Over-read in function find_next_quote in GitHub repository vim/vim prior to 8.2.4925. This vulnerabilities are capable of crashing software, Modify Memory, and possible remote execution
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.
How developers prevent this class of flaw
- Use a language that provides appropriate memory abstractions.
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
- github.com/vim/vim/commit/53a70289c2712808e6d4e88927e03cac01b470ddThird Party Advisory
Third-party and government advisories
- seclists.org/fulldisclosure/2022/Oct/28Mailing List, Third Party Advisory
- seclists.org/fulldisclosure/2022/Oct/41Mailing List, Third Party Advisory
- security.gentoo.org/glsa/202208-32Third Party Advisory
- security.gentoo.org/glsa/202305-16Third Party Advisory
- support.apple.com/kb/HT213488Third Party Advisory
Technical write-ups (may include proof of concept)
- huntr.dev/bounties/e26d08d4-1886-41f0-9af4-f3e1bf3d52eeExploit, Third Party Advisory
Other references
Other vulnerabilities in vim/vim
- 7.8 High severity
Recent Out-of-bounds Read vulnerabilities
- 7.5 High severity
- 9.3 High severity
- 7.1 High severity
- 7.1 High severity
- 7.8 High severity
- 7.1 High severity
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