CVE-2020-1045

Summary

<p>A security feature bypass vulnerability exists in the way Microsoft ASP.NET Core parses encoded cookie names.</p> <p>The ASP.NET Core cookie parser decodes entire cookie strings which could allow a malicious attacker to set a second cookie with the name being percent encoded.</p> <p>The security update addresses the vulnerability by fixing the way the ASP.NET Core cookie parser handles encoded names.</p>

Affected Software

VendorProductVersion RangeStatus
MicrosoftASP.NET Core 2.12.0 < publicationaffected
MicrosoftASP.NET Core 3.13.0 < publicationaffected

Weaknesses

  • Security Feature Bypass

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References