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Advisories

Zebra before 8.0.0 Denial of Service via z_listunifiedreceivers RPC

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severity
high
date
Affecting

  • zebra >= 0, < 8.0.0

  • zebra >= 0, < 4.5.0

CWE
  • CWE-617 Reachable Assertion
CVSS
7.1
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
robustfengbin, mpguerra, upbqdn
Description
ZcashFoundation Zebra zebra-rpc before 8.0.0 and zebrad before 4.5.0 contain a reachable assertion in the z_listunifiedreceivers RPC handler, which calls expect() on Sapling receiver parsing that fails for Unified Addresses carrying invalid Jubjub points. Authenticated RPC clients can submit such an address to abort the zebrad process, repeatably keeping the node offline.

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