Busybox: busybox: http request smuggling via pipelined requests in httpd reverse proxy
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions |
|---|---|---|---|
| Red Hat | Red Hat Hardened Images | affected | — |
No data.
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Busybox | Busybox |
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| Redhat | Hardened Images |
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| Redhat | Hummingbird |
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Vendor Workaround
Do not use BusyBox httpd P: rules as the sole path-based access control in front of sensitive backends. Remove P: lines if proxying is not required, or place a full reverse proxy (for example nginx or HAProxy) in front of the backend. Recompile with FEATURE_HTTPD_PROXY disabled if the applet is not needed.
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.261% probability within 30 days)
| Type | Values Removed | Values Added |
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| First Time appeared |
Busybox
Busybox busybox Redhat hardened Images |
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| Vendors & Products |
Busybox
Busybox busybox Redhat hardened Images |
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|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| References |
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| Metrics |
threat_severity
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threat_severity
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in BusyBox httpd's reverse proxy feature. When the proxy is configured to forward requests matching a URL prefix to a backend server, only the first HTTP request on a TCP connection has its path rewritten. An attacker can send a pipelined second request that is relayed verbatim to the backend, bypassing the configured path restrictions. This allows accessing arbitrary paths on the backend server that were not intended to be exposed through the proxy. | |
| Title | Busybox: busybox: http request smuggling via pipelined requests in httpd reverse proxy | |
| First Time appeared |
Redhat
Redhat hummingbird |
|
| Weaknesses | CWE-444 | |
| CPEs | cpe:/a:redhat:hummingbird:1 | |
| Vendors & Products |
Redhat
Redhat hummingbird |
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| References |
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| Metrics |
cvssV3_1
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