Excon is usable, fast, simple HTTP 1.1 for Ruby. Prior to 1.5.0, Excon's RedirectFollower middleware failed to strip additional sensitive headers when following redirects and did not provide a custom list of headers to strip. This could cause inadvertent leakage of sensitive data when the initial request includes header information that is not intended for the new target. This issue is fixed in version 1.5.0.
| Vendor | Product | Versions |
|---|---|---|
| rubygems | excon | rubygems/excon: < 1.5.0 |
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Article reveals the actual vulnerability is an open redirect (CWE-601) rather than sensitive header leakage, and adds MITRE ATT&CK technique T1598.003 for phishing via redirect.
Initial creation
