certfr_avis - CERTFR-2020-AVI-563

CERTFR-2020-AVI-563

Vulnerability from certfr_avis - Published: - Updated:

Une vulnérabilité a été corrigée dans Microsoft .Net. Elle permet à un attaquant de provoquer un contournement de la fonctionnalité de sécurité.

Solution

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

None

Impacted products

	Vendor	Product	Description
	Microsoft	.Net	ASP.NET Core 3.1
	Microsoft	.Net	ASP.NET Core 2.1

References

Title

Publication Time

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

Vulnerability from cvelistv5 – Published: 2020-09-11 00:00 – Updated: 2024-11-18 16:25

Summary

A security feature bypass vulnerability exists in the way Microsoft ASP.NET Core parses encoded cookie names. 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. The security update addresses the vulnerability by fixing the way the ASP.NET Core cookie parser handles encoded names.

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

microsoft

References

URL

Tags

	https://portal.msrc.microsoft.com/en-US/security-…
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
	https://github.com/dotnet/core/blob/main/release-…
	https://security.snyk.io/vuln/SNYK-RHEL8-DOTNET-1439600
	https://access.redhat.com/errata/RHSA-2020:3699

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*:*:*:*:*:*:*:*

Microsoft

ASP.NET Core 3.1

Affected: 3.0 , < publication (custom)
cpe:2.3:a:microsoft:asp.net_core:3.1:*:*:*:*:*:*:*

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

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.

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