certfr_avis - certfr-2020-avi-563

CERTFR-2020-AVI-563

Vulnerability from certfr_avis

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

Modified

2024-11-18 16:25

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

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.

References

URL

Tags

	https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1045
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5LN2FUVBSVPGK7AU3NMLO3YR6CGONQPB/	vendor-advisory
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ASICXQXS4M7MTAF6SGQMCLCA63DLCUT3/	vendor-advisory
	https://github.com/dotnet/core/blob/main/release-notes/3.1/3.1.8/3.1.8.md#changes-in-318
	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

Version: 2.0 < publication
cpe:2.3:a:microsoft:asp.net_core:2.1*:*:*:*:*:*:*:*

Microsoft

ASP.NET Core 3.1

Version: 3.0 < publication
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 seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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