CyberRota Analysis
AI-GeneratedVersions 1.7.14 to 1.7.17 of the Klever-Go implementation of the Klever blockchain protocol are vulnerable to a denial-of-service attack due to unbounded goroutine creation triggered by incoming direct messages. This flaw allows an attacker to overwhelm the node's resources, degrading its availability and hindering legitimate traffic processing. Organizations using affected versions should prioritize upgrading to version 1.7.18 to mitigate this high-severity vulnerability.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Klever-Go is the Go implementation of the Klever blockchain protocol. In versions 1.7.14 through 1.7.17, the direct-message ingress handler spawns a new goroutine for every incoming direct message before the processor-level antiflood layer makes any admission decision, with no semaphore, throttler, or bound on the number of concurrent in-flight spawns. Because the antiflood check runs inside the spawned goroutine rather than before it, a single connected peer can open a direct-send stream and send a stream of well-formed messages to force unbounded goroutine creation, where each goroutine allocates its own stack and holds a message reference until processing completes, adding scheduler and garbage-collection pressure faster than the runtime can drain it. This lets one peer degrade the node's availability and its ability to process legitimate traffic, resulting in a remotely triggerable denial of service. The issue is fixed in 1.7.18.