CVE-2020-1045 (GCVE-0-2020-1045)

Vulnerability from cvelistv5 – Published: 2020-09-11 00:00 – Updated: 2024-11-18 16:25
VLAI
Title
Microsoft ASP.NET Core Security Feature Bypass Vulnerability
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>
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C
CWE
  • Security Feature Bypass
Assigner
References
Impacted products
Vendor Product Version
Microsoft ASP.NET Core 2.1 Affected: 2.0 , < publication (custom)
    cpe:2.3:a:microsoft:asp.net_core:2.1*:*:*:*:*:*:*:*
 Create a notification for this product.
Microsoft ASP.NET Core 3.1 Affected: 3.0 , < publication (custom)
    cpe:2.3:a:microsoft:asp.net_core:3.1:*:*:*:*:*:*:*
 Create a notification for this product.
Date Public
2020-09-08 07:00
Show details on NVD website
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    "vulnrichment": {
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      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.