blaze: Multiple HTTP/1.1 request-smuggling primitives in blaze's Java wire parser
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
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| http4s | blaze | affected |
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| org.http4s | blaze-http_2.13 | affected |
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| org.http4s | blaze-http_3 | affected |
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| org.http4s | http4s-blaze-server_2.13 | affected |
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| Source | ID | Title |
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Github GHSA |
GHSA-mhvj-jhpq-885v | blaze: Multiple HTTP/1.1 request-smuggling primitives in blaze's Java wire parser |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.628% probability within 30 days)
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| Metrics |
ssvc
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| Description | blaze is a Scala library for building asynchronous pipelines, with a focus on network IO. Prior to 0.23.18 and from 1.0.0-M1 until 1.0.0-M42, five HTTP/1.1 conformance laxities in the hand-written Java parser under http/src/main/java/org/http4s/blaze/http/parser/ can cause blaze to derive a different request boundary than a stricter fronting intermediary. A default BlazeServerBuilder accepts invalid or valueless header field names that violate tchar syntax, obsolete folded field lines (obs-fold), unsupported Transfer-Encoding values, duplicate Content-Length fields, and requests containing both Transfer-Encoding and Content-Length. If a lenient or legacy proxy forwards the malformed bytes but interprets them differently, the disagreement can permit front-end authorization bypass, response-queue poisoning on pooled backend connections, or cache poisoning. Exploitation requires a pair of disagreeing parsers; no non-default blaze configuration is required. The affected checks are enforced in BodyAndHeaderParser and Http1ServerParser. This issue is fixed in versions 0.23.18 and 1.0.0-M42. | |
| Title | blaze: Multiple HTTP/1.1 request-smuggling primitives in blaze's Java wire parser | |
| Weaknesses | CWE-444 | |
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| Metrics |
cvssV3_1
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