Versions of the npm CLI prior to 6.13.4 are vulnerable to an Arbitrary File Overwrite. It fails to prevent existing globally-installed binaries to be overwritten by other package installations. For example, if a package was installed globally and created a serve binary, any subsequent installs of packages that also create a serve binary would overwrite the previous serve binary. This behavior is still allowed in local installations and also through install scripts. This vulnerability bypasses a user using the --ignore-scripts install option.
Published 2019-12-13 01:15:11
Updated 2022-08-02 20:45:09
Source GitHub, Inc.
View at NVD,   CVE.org
Vulnerability category: Directory traversal

Exploit prediction scoring system (EPSS) score for CVE-2019-16777

0.19%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 56 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-16777

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.5
MEDIUM AV:N/AC:L/Au:S/C:N/I:P/A:P
8.0
4.9
NIST
6.5
MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
2.8
3.6
NIST
7.7
HIGH CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
1.3
5.8
GitHub, Inc.

CWE ids for CVE-2019-16777

  • The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
    Assigned by: security-advisories@github.com (Secondary)
  • The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2019-16777

Products affected by CVE-2019-16777

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