GHSA-g376-whg7-896m Directory Traversal in yjmyjmyjm

Not scored Published

Attackers can access arbitrary files on the system via directory traversal in the yjmyjmyjm npm library, leading to information disclosure.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is GHSA-g376-whg7-896m?

GHSA-g376-whg7-896m is a path traversal vulnerability in yjmyjmyjm, published on 1 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Affected versions of yjmyjmyjm resolve relative file paths, resulting in a directory traversal vulnerability. A malicious actor can use this vulnerability to access files outside of the intended directory root, which may result in the disclosure of private files on the vulnerable system.

Example request:

GET /../../../../../../../../../../etc/passwd HTTP/1.1
host:foo

Recommendation

No patch is available for this vulnerability.

It is recommended that the package is only used for local development, and if the functionality is needed for production, a different package is used instead.

Which versions are affected by GHSA-g376-whg7-896m?

2 open source packages ship an affected version, including yjmyjmyjm.

PackageAffectedFixed in
yjmyjmyjm npmFrom 0.0.0None
yjmyjmyjm npmFrom 0.0.0None

How do I fix GHSA-g376-whg7-896m?

No fix has been published for GHSA-g376-whg7-896m yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is GHSA-g376-whg7-896m being exploited?

There is no known exploitation of GHSA-g376-whg7-896m in the wild and no public exploit code.

Sources

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