CVE-2025-59789 (GCVE-0-2025-59789)
Vulnerability from cvelistv5 – Published: 2025-12-01 10:22 – Updated: 2025-12-01 15:05
VLAI
EPSS
VEX
Title
Apache bRPC: Stack Exhaustion via Unbounded Recursion in JSON Parser
Summary
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.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-01 15:04 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
apache
CNA
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache bRPC |
Affected:
0 , < 1.15.0
(semver)
|
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