Apache bRPC: Denial of Service via Unbounded Redis Inline Command Allocation
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Published
5 h ago
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
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Source agreement
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Evidence confidence
%63
Short explanation
A denial of service vulnerability exists in Apache bRPC where the Redis protocol implementation allows inline command parsing to allocate connection buffers before a complete CRLF-terminated command is available.
It can lead to a denial of service by increasing memory usage and CPU copy overhead on Apache bRPC servers running the Redis protocol and reachable by untrusted clients.
What should be done?
- Upgrade Apache bRPC to version 1.18.0
- Apply the referenced pull request patch
- Ensure redis_max_allocation_size is enforced on Redis inline command lines
Chain of evidence and sources
Apache bRPC'nin Redis protokolü uygulaması, sonlandırılmamış satır içi komutlar nedeniyle arabellek tahsisine izin vermektedir.
Saldırganlar uzun satır içi girdiler göndererek bellek ve CPU yükünü artırabilir ve hizmet engeline neden olabilir.
Sorun, Apache bRPC sürüm 1.18.0 sürümüne yükseltilerek veya ilgili yama uygulanarak giderilebilir.
Show the technical text from the sources
The Redis protocol implementation in Apache bRPC allowed inline command parsing to allocate and copy the full connection buffer before a complete CRLF-terminated command was available. A remote attacker with access to a Redis-protocol bRPC service could send long inline inputs without a terminating CRLF to increase memory usage and CPU copy overhead, potentially causing denial of service. Root Cause: The Redis inline command parser allocated memory based on the current input buffer size and copied the entire buffer before determining the current inline command boundary. The existing redis_max_allocation_size limit was applied to RESP bulk strings and arrays, but not effectively to the inline command path before allocation. Affected Scenarios: Use Apache bRPC server with Redis protocol enabled and reachable by untrusted clients. How to Fix: 1. Upgrade Apache bRPC to version 1.18.0, which fixes this issue. 2. Apply the patch from PR https://github.com/apache/brpc/pull/3363 . Note: The fix applies redis_max_allocation_size to Redis inline command lines and scans for CRLF before allocating parser arena memory. Inline command lines exceeding this limit are rejected.
CWE: CWE-770
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-58064 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | Apache Software Foundation | Apache bRPC | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| The sources have not yet published a verified CVSS metric. | ||||
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-58064 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-58064 weaknesses.
Official Sources and Advisories
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Weakness Type (CWE & CAPEC)
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