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CVE-2021-34532

ASP.NET Core and Visual Studio Information Disclosure Vulnerability

CVSS score

5.5

EPSS probability

%1.2

Risk score

0.1

Published

5 y ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

Impact on My Inventory

Only the personal products you have added to your account are assessed; an organisation's inventory does not appear here.

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Vulnerability description

DayBreach CVE AI Research

CVE-2021-34532 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

ASP.NET Core and Visual Studio Information Disclosure Vulnerability

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2021-34532 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1microsoftASP.NET Core 2.1 View
2microsoftASP.NET Core 3.1 View
3microsoftASP.NET Core 5.0 View
4microsoftMicrosoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9) View
5microsoftMicrosoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3) View
6microsoftMicrosoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6) View
7microsoftMicrosoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8) View
8microsoftVisual Studio 2019 for Mac version 8.10 View
9microsoftasp.net core View
10microsoftasp.net core View
11microsoftasp.net core View
12microsoftvisual studio 2019 View
13microsoftvisual studio 2019 View
14nugetMicrosoft.AspNetCore.Authentication.JwtBearer View
15nugetMicrosoft.AspNetCore.Authentication.JwtBearer View
16nugetMicrosoft.AspNetCore.Authentication.JwtBearer View
17nugetMicrosoft.AspNetCore.Authentication.JwtBearer View
18nugetMicrosoft.AspNetCore.Authentication.JwtBearer View
19nugetMicrosoft.AspNetCore.Authentication.JwtBearer View
Total affected vendors: 2|Products: 19

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
5.5CVSS V3_1MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:CCVE CNA
5.5CVSS V31MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NNVD
5.5CVSS 3.x—Vector not publishedGitHub Advisory
2.1CVSS V2—AV:L/AC:L/Au:N/C:P/I:N/A:NNVD
0.0CVSS 4.0—Vector not publishedGitHub Advisory

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

7 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

cvelist

ASP.NET Core and Visual Studio Information Disclosure Vulnerability

Open source
nvd

NVD tarafından Patch olarak etiketlenmiş referans

Open source
osvMicrosoft.AspNetCore.Authentication.JwtBearer2.1.29

OSV düzeltilmiş sürüm: 2.1.29

osvMicrosoft.AspNetCore.Authentication.JwtBearer3.1.18

OSV düzeltilmiş sürüm: 3.1.18

osvMicrosoft.AspNetCore.Authentication.JwtBearer5.0.9

OSV düzeltilmiş sürüm: 5.0.9

reference

ASP.NET Core and Visual Studio Information Disclosure Vulnerability

Open source
reference

Yama veya çözüm referansı

Open source
Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Apply the official update named in the evidence only to the matching product and version.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-34532 is associated with the following CWEs:

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CWE-20: Improper Input Validation

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-34532 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureYerel erişim
PermissionsLow
UserGerekmiyor

Official Sources and Advisories

ASP.NET Core and Visual Studio Information Disclosure Vulnerabilitypatchhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34532patchhttps://github.com/dotnet/aspnetcore/security/advisories/GHSA-q7cg-43mg-qp69vendor-advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2021-34532vendor-advisoryhttps://github.com/advisories/GHSA-q7cg-43mg-qp69vendor-advisoryhttps://github.com/dotnet/aspnetcorevendor-advisory

CVSS Vector Radar Chart

5.5 / 10
Attack VectorLocalComplexityLowPrivilegesLowUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityNone

Vulnerability Scoring Details

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow privileges
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)None

Yama doğrulandı

7 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

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