Http4s: FollowRedirect middleware leaks credentials over https->http same-authority redirect
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| http4s | http4s | affected |
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No data.
No data.
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| Http4s | Http4s |
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No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.279% probability within 30 days)
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| First Time appeared |
Http4s
Http4s http4s |
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| Vendors & Products |
Http4s
Http4s http4s |
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| Metrics |
ssvc
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| Description | Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, The FollowRedirect client middleware strips Authorization and Cookie headers only when a redirect changes authority, but authority comparison excludes the URI scheme. A same-authority redirect from HTTPS to HTTP therefore preserves credentials and transmits them over a plaintext connection. An attacker who can induce the downgrade and observe the network can capture those sensitive headers from applications using FollowRedirect. This issue is fixed in versions 0.23.35 and 1.0.0-M47. | |
| Title | Http4s: FollowRedirect middleware leaks credentials over https->http same-authority redirect | |
| Weaknesses | CWE-200 CWE-319 |
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| References |
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| Metrics |
cvssV3_1
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