CVE-2017-20190 (GCVE-0-2017-20190)

Vulnerability from cvelistv5 – Published: 2024-03-26 00:00 – Updated: 2024-08-08 18:54 Disputed
VLAI
Summary
Some Microsoft technologies as used in Windows 8 through 11 allow a temporary client-side performance degradation during processing of multiple Unicode combining characters, aka a "Zalgo text" attack. NOTE: third parties dispute whether the computational cost of interpreting Unicode data should be considered a vulnerability.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-15 16:50 UTC
CWE
  • n/a
  • CWE-176 - Improper Handling of Unicode Encoding
Assigner
References
Impacted products
Vendor Product Version
microsoft windows Affected: 8 , ≤ 11 (custom)
    cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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Related by attack behaviour

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