Improper Link Resolution Before File Access Affecting nodegit package, versions <0.26.3


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    Exploit Maturity
    Mature
    EPSS
    7.09% (95th percentile)

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  • Snyk ID SNYK-JS-NODEGIT-542723
  • published 7 Jan 2020
  • disclosed 10 Dec 2019
  • credit Unknown

How to fix?

Upgrade nodegit to version 0.26.3 or higher.

Overview

nodegit is a Node bindings to the libgit2 project.

Affected versions of this package are vulnerable to Improper Link Resolution Before File Access. Filenames on Linux/Unix can contain backslashes. On Windows, backslashes are directory separators. Git did not use to refuse to write out tracked files with such filenames.

The exploit uses backslashes in the file names stored in tree objects, allowing arbitrary files even outside of the Git worktree to be over-written.

Note: This is a Windows-only vulnerability.

CVSS Scores

version 3.1
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Snyk

Recommended
8.9 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Changed
  • Confidentiality (C)
    Low
  • Integrity (I)
    High
  • Availability (A)
    High
Expand this section

NVD

8.8 high
Expand this section

SUSE

0 info