Advisories

Atlantis GitHub App Setup Endpoint Returns App Credentials to Unauthenticated Callers

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severity
high
date
Affecting
  • atlantis <= 0.47.1

CWE
  • CWE-306 Missing Authentication for Critical Function
CVSS
8.8
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
Credit
George Chen
Description
Atlantis through 0.47.1 fails to authenticate the /github-app/setup endpoint, allowing unauthenticated attackers to access GitHub App credentials. Attackers can observe or intercept the GitHub redirect during setup to obtain the RSA private key and webhook secret, enabling installation token minting and webhook payload forgery.

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