CVE-2023-7079: Arbitrary remote file read in Wrangler dev server
First published: Fri Dec 29 2023(Updated: )
### Impact Sending specially crafted HTTP requests and inspector messages to Wrangler's dev server could result in any file on the user's computer being accessible over the local network. An attacker that could trick any user on the local network into opening a malicious website could also read any file. ### Patches This issue was fixed in `wrangler@3.19.0`. Wrangler will now only serve files that are part of your bundle, or referenced by your bundle's source maps. ### Workarounds Configure Wrangler to listen on local interfaces instead with `wrangler dev --ip 127.0.0.1`. This is the [default as of `wrangler@3.16.0`](https://github.com/cloudflare/workers-sdk/security/advisories/GHSA-f8mp-x433-5wpf), and removes the local network as an attack vector, but does not prevent an attack from visiting a malicious website. ### References - https://github.com/cloudflare/workers-sdk/pull/4532 - https://github.com/cloudflare/workers-sdk/pull/4535
Credit: cna@cloudflare.com cna@cloudflare.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| npm/wrangler | >=3.9.0<3.19.0 | 3.19.0 |
| Cloudflare Wrangler | >=3.9.0<3.19.0 | |
| >=3.9.0<3.19.0 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://github.com/cloudflare/workers-sdk/security/advisories/GHSA-cfph-4qqh-w828
- https://nvd.nist.gov/vuln/detail/CVE-2023-7079
- https://github.com/cloudflare/workers-sdk/pull/4532
- https://github.com/cloudflare/workers-sdk/pull/4535
- https://github.com/cloudflare/workers-sdk/commit/29df8e17545bf3926b6d61678b596be809d40c6d
- https://github.com/cloudflare/workers-sdk/commit/311ffbd5064f8301ac6f0311bbe5630897923b93
- https://github.com/advisories/GHSA-cfph-4qqh-w828 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2023-7079?
CVE-2023-7079 has a high severity due to its potential to expose sensitive files over the local network.
How do I fix CVE-2023-7079?
To fix CVE-2023-7079, update the Wrangler package to version 3.19.0 or later.
What software is affected by CVE-2023-7079?
CVE-2023-7079 affects Wrangler versions between 3.9.0 and 3.19.0.
What type of attack is possible with CVE-2023-7079?
CVE-2023-7079 allows an attacker to access any file on the user's computer via specially crafted HTTP requests.
How can I protect myself from CVE-2023-7079?
To protect yourself from CVE-2023-7079, avoid using affected versions of Wrangler and check for updates regularly.
- collector/github-advisory-latest
- alias/GHSA-cfph-4qqh-w828
- alias/CVE-2023-7079
- collector/github-advisory
- agent/type
- agent/first-publish-date
- agent/author
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/remedy
- agent/severity
- agent/title
- agent/weakness
- agent/references
- agent/softwarecombine
- collector/nvd-cve
- agent/event
- agent/description
- collector/epss-latest
- source/FIRST
- agent/epss
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/trending
- agent/tags
- agent/source
- package-manager/npm
- vendor/cloudflare
- canonical/cloudflare wrangler
- version/cloudflare wrangler/3.9.0