VULNERABILITY INTELLIGENCE

CVE-2021-37606

CVSS score5.3 MEDIUM
EPSS probability0.74%
CISA KEVNot currently listed
Published2021-07-30
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Description

Meow hash 0.5/calico does not sufficiently thwart key recovery by an attacker who can query whether there's a collision in the bottom bits of the hashes of two messages, as demonstrated by an attack against a long-running web service that allows the attacker to infer collisions by measuring timing differences.

Weakness classification

  • CWE-203: Observable Discrepancy
  • CWE-326: Inadequate Encryption Strength

Primary references