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Advisories

rclone before v1.75.0 Credential Exposure via S3 Redirect

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severity
medium
date
Affecting

  • rclone >= 0, < 1.75.0

CWE
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CVSS
6
CVSS V4 Vector
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Credit
cyberlanc3r, ncw
Description
rclone before v1.75.0 fails to sanitize IBM IAM bearer tokens and SSE-C encryption keys during S3 redirect callbacks, allowing credentials to be preserved across scheme or host changes. Attackers observing network traffic from a trusted endpoint can capture reusable IBM IAM tokens on same-host HTTPS-to-HTTP downgrades or SSE-C keys on cross-origin redirects to access protected S3 objects.

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