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Security Advisories: GSA_kwCzR0hTQS1mNXgzLTMyZzYteHEzNs4AA6O0

Denial of service while parsing a tar file due to lack of folders count validation

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

Permalink: https://github.com/advisories/GHSA-f5x3-32g6-xq36
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1mNXgzLTMyZzYteHEzNs4AA6O0
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 1 month ago
Updated: 22 days ago


CVSS Score: 6.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Identifiers: GHSA-f5x3-32g6-xq36, CVE-2024-28863
References: Repository: https://github.com/isaacs/node-tar
Blast Radius: 42.3

Affected Packages

npm:tar
Dependent packages: 5,040
Dependent repositories: 3,179,743
Downloads: 111,180,274 last month
Affected Version Ranges: < 6.2.1
Fixed in: 6.2.1
All affected versions: 0.0.1, 0.1.0, 0.1.2, 0.1.3, 0.1.4, 0.1.5, 0.1.6, 0.1.7, 0.1.8, 0.1.9, 0.1.10, 0.1.11, 0.1.12, 0.1.13, 0.1.14, 0.1.15, 0.1.16, 0.1.17, 0.1.18, 0.1.19, 0.1.20, 1.0.0, 1.0.1, 1.0.2, 1.0.3, 2.0.0, 2.0.1, 2.1.0, 2.1.1, 2.2.0, 2.2.1, 2.2.2, 3.0.0, 3.0.1, 3.1.0, 3.1.1, 3.1.2, 3.1.3, 3.1.4, 3.1.5, 3.1.6, 3.1.7, 3.1.8, 3.1.9, 3.1.10, 3.1.11, 3.1.12, 3.1.13, 3.1.14, 3.1.15, 3.2.0, 3.2.1, 3.2.2, 3.2.3, 4.0.0, 4.0.1, 4.0.2, 4.1.0, 4.1.1, 4.1.2, 4.2.0, 4.3.0, 4.3.1, 4.3.2, 4.3.3, 4.4.0, 4.4.1, 4.4.2, 4.4.3, 4.4.4, 4.4.5, 4.4.6, 4.4.7, 4.4.8, 4.4.9, 4.4.10, 4.4.11, 4.4.12, 4.4.13, 4.4.14, 4.4.15, 4.4.16, 4.4.17, 4.4.18, 4.4.19, 5.0.0, 5.0.1, 5.0.2, 5.0.4, 5.0.5, 5.0.6, 5.0.7, 5.0.8, 5.0.9, 5.0.10, 5.0.11, 6.0.0, 6.0.1, 6.0.2, 6.0.3, 6.0.4, 6.0.5, 6.1.0, 6.1.1, 6.1.2, 6.1.3, 6.1.4, 6.1.5, 6.1.6, 6.1.7, 6.1.8, 6.1.9, 6.1.10, 6.1.11, 6.1.12, 6.1.13, 6.1.14, 6.1.15, 6.2.0
All unaffected versions: 6.2.1, 7.0.0, 7.0.1
npm:node-tar
Dependent packages: 6
Dependent repositories: 1
Downloads: 1,849 last month
Affected Version Ranges: < 6.2.1
Fixed in: 6.2.1
All affected versions: 1.0.0
All unaffected versions: