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Advisories

Zebra zebrad before 7.0.0 Reachable Assertion DoS via Peer Disconnection

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Severity
high
Date
Affecting

  • zebra >= 0, < 7.0.0

CWE
  • CWE-617 Reachable Assertion
CVSS
8.2
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
SphereDonout, conradoplg, mpguerra
Description
ZcashFoundation Zebra zebrad before 7.0.0 contains a reachable assertion race condition that allows unauthenticated remote peers to abort the node by triggering disconnection during a blocked outbound send. Malicious peers can return empty FindBlocks or FindHeaders replies and stop reading their socket, dropping an unresolved MustUseClientResponseSender and terminating syncing nodes.

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