GHSA-f5x3-32g6-xq36

Suggest an improvement
Source
https://github.com/advisories/GHSA-f5x3-32g6-xq36
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/03/GHSA-f5x3-32g6-xq36/GHSA-f5x3-32g6-xq36.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-f5x3-32g6-xq36
Aliases
Related
Published
2024-03-22T16:57:05Z
Modified
2024-09-11T06:13:33.280123Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Denial of service while parsing a tar file due to lack of folders count validation
Details

Description:

During some analysis today on npm's node-tar package I came across the folder creation process, Basicly if you provide node-tar with a path like this ./a/b/c/foo.txt it would create every folder and sub-folder here a, b and c until it reaches the last folder to create foo.txt, In-this case I noticed that there's no validation at all on the amount of folders being created, that said we're actually able to CPU and memory consume the system running node-tar and even crash the nodejs client within few seconds of running it using a path with too many sub-folders inside

Steps To Reproduce:

You can reproduce this issue by downloading the tar file I provided in the resources and using node-tar to extract it, you should get the same behavior as the video

Proof Of Concept:

Here's a video show-casing the exploit:

Impact

Denial of service by crashing the nodejs client when attempting to parse a tar archive, make it run out of heap memory and consuming server CPU and memory resources

Report resources

payload.txt archeive.tar.gz

Note

This report was originally reported to GitHub bug bounty program, they asked me to report it to you a month ago

Database specific 
{
    "nvd_published_at": "2024-03-21T23:15:10Z",
    "cwe_ids": [
        "CWE-400"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2024-03-22T16:57:05Z"
}
References

Affected packages

npm / node-tar

Package

Name
node-tar
View open source insights on deps.dev
Purl
pkg:npm/node-tar

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.2.1

npm / tar

Package

Name
tar
View open source insights on deps.dev
Purl
pkg:npm/tar

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.2.1