Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS12eDI0LXg0bXYtdndyNc4AA-I4

Starship vulnerable to shell injection via undocumented, unpredictable shell expansion in custom commands

Description

Starship is a cross-shell prompt. Starting in version 1.0.0 and prior to version 1.20.0, undocumented and unpredictable shell expansion and/or quoting rules make it easily to accidentally cause shell injection when using custom commands with starship in bash. Version 1.20.0 fixes the vulnerability.

PoC

Have some custom command which prints out information from a potentially untrusted/unverified source.

[custom.git_commit_name]
command = 'git show -s --format="%<(25,mtrunc)%s"'
style = "italic"
when = true

Impact

This issue only affects users with custom commands, so the scope is limited, and without knowledge of others' commands, it could be hard to successfully target someone.

Permalink: https://github.com/advisories/GHSA-vx24-x4mv-vwr5
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS12eDI0LXg0bXYtdndyNc4AA-I4
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: 6 months ago
Updated: 4 months ago

CVSS Score: 7.4
CVSS vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Percentage: 0.00046
EPSS Percentile: 0.17964

Identifiers: GHSA-vx24-x4mv-vwr5, CVE-2024-41815
References:

• https://github.com/starship/starship/security/advisories/GHSA-vx24-x4mv-vwr5
• https://github.com/starship/starship/commit/cfc58161e0ec595db90af686ad77a73df6d44d74
• https://github.com/starship/starship/releases/tag/v1.20.0
• https://nvd.nist.gov/vuln/detail/CVE-2024-41815
• https://github.com/advisories/GHSA-vx24-x4mv-vwr5

Repository: https://github.com/starship/starship
Blast Radius: 0.0

Affected Packages