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Advisories

Hickory DNS from 0.26.0 before 0.26.2 Panic via TSIG RDATA Decoding

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Severity
high
Date
Affecting

  • hickory-dns >= 0.26.0, < 0.26.2

CWE
  • CWE-191 Integer Underflow (Wrap or Wraparound)
CVSS
8.7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
JasonPap
Description
Hickory DNS from 0.26.0 before 0.26.2 contains an integer underflow vulnerability in TSIG RDATA decoding that allows remote attackers to trigger a panic via malformed records. Attackers can send a crafted TSIG record in DNS wire format to cause unchecked subtraction underflow, crashing builds with overflow checks enabled and causing denial of service.

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