Ech0 before 5.0.1 Denial of Service via Accept-Language
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| lin-snow | Ech0 | unaffected |
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No data.
No data.
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| Ech0 | Ech0 |
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| Lin-snow | Ech0 |
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No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.509% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Lin-snow
Lin-snow ech0 |
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| Vendors & Products |
Lin-snow
Lin-snow ech0 |
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|---|---|---|
| Description | Ech0 before 5.0.1 does not impose any size or shape limit on the Accept-Language header processed by its i18n middleware, which runs on every HTTP request. The header is passed unfiltered to go-i18n's NewLocalizer, which internally calls golang.org/x/text/language.ParseAcceptLanguage. The CVE-2022-32149 mitigation in x/text caps '-' characters but not '_' characters, which the parser aliases to '-', allowing quadratic-time parsing to be triggered with a large header (up to Go's default 1 MiB) built from underscore separators. An unauthenticated attacker can send such requests to consume roughly 1.5 seconds of CPU each, and concurrent requests can saturate a multi-core server (denial of service). | |
| Title | Ech0 before 5.0.1 Denial of Service via Accept-Language | |
| First Time appeared |
Ech0
Ech0 ech0 |
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| Weaknesses | CWE-400 | |
| CPEs | cpe:2.3:a:ech0:ech0:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Ech0
Ech0 ech0 |
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| References |
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| Metrics |
cvssV3_1
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