stream-json: FlexAssembler string/RegExp path filters join the full key stack per container start, giving O(depth^2) CPU denial of service
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| uhop | stream-json | affected |
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| Uhop | Stream-json |
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Github GHSA |
GHSA-jj87-hc4r-jwfw | stream-json: FlexAssembler string/RegExp path filters join the full key stack per container start, giving O(depth^2) CPU denial of service |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.254% probability within 30 days)
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| Metrics |
ssvc
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| Weaknesses | CWE-770 | |
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| Metrics |
threat_severity
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threat_severity
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| First Time appeared |
Uhop
Uhop stream-json |
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| Vendors & Products |
Uhop
Uhop stream-json |
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| Description | stream-json is a micro-library of stream components for processing JSON and JSONC with a minimal memory footprint. From 2.0.0 until 3.7.0, FlexAssembler compiles string and regular-expression path filters into matchers that join the full key stack on every container start. Because the key stack grows with unbounded object or array nesting, a document nested to depth D causes D joins whose cost grows with the current depth, resulting in quadratic CPU consumption on the single-threaded event loop. The join occurs before the rule match decision, so the attacker does not need to know the target schema. Consumers using only function filters or no rules are not affected. A crafted nested document can stall all concurrent work in a process that feeds it to an affected FlexAssembler. This issue is fixed in 3.7.0, which adds a default maximum depth. | |
| Title | stream-json: FlexAssembler string/RegExp path filters join the full key stack per container start, giving O(depth^2) CPU denial of service | |
| Weaknesses | CWE-407 | |
| References |
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| Metrics |
cvssV3_1
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