All the vulnerabilities related to the version 0.0.4 of the package
Regular Expression Denial of Service (ReDoS) in micromatch
The NPM package micromatch
prior to version 4.0.8 is vulnerable to Regular Expression Denial of Service (ReDoS). The vulnerability occurs in micromatch.braces()
in index.js
because the pattern .*
will greedily match anything. By passing a malicious payload, the pattern matching will keep backtracking to the input while it doesn't find the closing bracket. As the input size increases, the consumption time will also increase until it causes the application to hang or slow down. There was a merged fix but further testing shows the issue persisted prior to https://github.com/micromatch/micromatch/pull/266. This issue should be mitigated by using a safe pattern that won't start backtracking the regular expression due to greedy matching.
Uncontrolled resource consumption in braces
The NPM package braces
fails to limit the number of characters it can handle, which could lead to Memory Exhaustion. In lib/parse.js,
if a malicious user sends "imbalanced braces" as input, the parsing will enter a loop, which will cause the program to start allocating heap memory without freeing it at any moment of the loop. Eventually, the JavaScript heap limit is reached, and the program will crash.
Denial of service while parsing a tar file due to lack of folders count validation
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
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
Here's a video show-casing the exploit:
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
This report was originally reported to GitHub bug bounty program, they asked me to report it to you a month ago
ip SSRF improper categorization in isPublic
The ip package through 2.0.1 for Node.js might allow SSRF because some IP addresses (such as 127.1, 01200034567, 012.1.2.3, 000:0:0000::01, and ::fFFf:127.0.0.1) are improperly categorized as globally routable via isPublic. NOTE: this issue exists because of an incomplete fix for CVE-2023-42282.
NPM IP package incorrectly identifies some private IP addresses as public
The isPublic()
function in the NPM package ip
doesn't correctly identify certain private IP addresses in uncommon formats such as 0x7F.1
as private. Instead, it reports them as public by returning true
. This can lead to security issues such as Server-Side Request Forgery (SSRF) if isPublic()
is used to protect sensitive code paths when passed user input. Versions 1.1.9 and 2.0.1 fix the issue.
http-cache-semantics vulnerable to Regular Expression Denial of Service
http-cache semantics contains an Inefficient Regular Expression Complexity , leading to Denial of Service. This affects versions of the package http-cache-semantics before 4.1.1. The issue can be exploited via malicious request header values sent to a server, when that server reads the cache policy from the request using this library.