8.2 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
8.5 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
28.8%
@npmcli/arborist
, the library that calculates dependency trees and manages the node_modules folder hierarchy for the npm command line interface, aims to guarantee that package dependency contracts will be met, and the extraction of package contents will always be performed into the expected folder. This is accomplished by extracting package contents into a projectโs node_modules
folder. If the node_modules
folder of the root project or any of its dependencies is somehow replaced with a symbolic link, it could allow Arborist to write package dependencies to any arbitrary location on the file system. Note that symbolic links contained within package artifact contents are filtered out, so another means of creating a node_modules
symbolic link would have to be employed. 1. A preinstall
script could replace node_modules
with a symlink. (This is prevented by using --ignore-scripts
.) 2. An attacker could supply the target with a git repository, instructing them to run npm install --ignore-scripts
in the root. This may be successful, because npm install --ignore-scripts
is typically not capable of making changes outside of the project directory, so it may be deemed safe. This is patched in @npmcli/arborist 2.8.2 which is included in npm v7.20.7 and above. For more information including workarounds please see the referenced GHSA-gmw6-94gg-2rc2.
[
{
"product": "arborist",
"vendor": "npm",
"versions": [
{
"status": "affected",
"version": "< 2.8.2"
}
]
}
]
8.2 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
8.5 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
28.8%