Apache bRPC: Stack Exhaustion via Unbounded Recursion in JSON Parser
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Apache Software Foundation | Apache bRPC | unaffected |
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No data.
| Vendor | Product | Versions |
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| Apache | Brpc | — |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: 1.7% (1.672% probability within 30 days)
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| CPEs | cpe:2.3:a:apache:brpc:*:*:*:*:*:*:*:* |
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| First Time appeared |
Apache
Apache brpc |
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| Vendors & Products |
Apache
Apache brpc |
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| Metrics |
cvssV3_1
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| Description | Uncontrolled recursion in the json2pb component in Apache bRPC (version < 1.15.0) on all platforms allows remote attackers to make the server crash via sending deep recursive json data. Root Cause: The bRPC json2pb component uses rapidjson to parse json data from the network. The rapidjson parser uses a recursive parsing method by default. If the input json has a large depth of recursive structure, the parser function may run into stack overflow. Affected Scenarios: Use bRPC server with protobuf message to serve http+json requests from untrusted network. Or directly use JsonToProtoMessage to convert json from untrusted input. How to Fix: (Choose one of the following options) 1. Upgrade bRPC to version 1.15.0, which fixes this issue. 2. Apply this patch: https://github.com/apache/brpc/pull/3099 Note: No matter which option you choose, you should know that the fix introduces a recursion depth limit with default value 100. It affects these functions: ProtoMessageToJson, ProtoMessageToProtoJson, JsonToProtoMessage, and ProtoJsonToProtoMessage. If your requests contain json or protobuf messages that have a depth exceeding the limit, the request will be failed after applying the fix. You can modify the gflag json2pb_max_recursion_depth to change the limit. | |
| Title | Apache bRPC: Stack Exhaustion via Unbounded Recursion in JSON Parser | |
| Weaknesses | CWE-674 | |
| References |
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