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ID

VAR-202102-0778


CVE

CVE-2021-1721


TITLE

plural  Microsoft  Service operation interruption in the product  (DoS)  Vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2021-004038

DESCRIPTION

.NET Core and Visual Studio Denial of Service Vulnerability. plural Microsoft The product interferes with service operation (DoS) A vulnerability exists.Denial of service (DoS) It may be put into a state. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: .NET 5.0 on Red Hat Enterprise Linux security and bugfix update Advisory ID: RHSA-2021:0473-01 Product: .NET Core on Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0473 Issue date: 2021-02-10 CVE Names: CVE-2021-1721 ==================================================================== 1. Summary: An update for rh-dotnet50-dotnet is now available for .NET on Red Hat Enterprise Linux. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: .NET Core on Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 .NET Core on Red Hat Enterprise Linux Server (v. 7) - x86_64 .NET Core on Red Hat Enterprise Linux Workstation (v. 7) - x86_64 3. Description: .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 5.0.103 and .NET Runtime 5.0.3. Security Fix(es): * dotnet: certificate chain building recursion Denial of Service (CVE-2021-1721) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1926918 - CVE-2021-1721 dotnet: certificate chain building recursion Denial of Service 6. Package List: .NET Core on Red Hat Enterprise Linux ComputeNode (v. 7): Source: rh-dotnet50-dotnet-5.0.103-1.el7_9.src.rpm x86_64: rh-dotnet50-aspnetcore-runtime-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-aspnetcore-targeting-pack-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-5.0.103-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-apphost-pack-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-debuginfo-5.0.103-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-host-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-hostfxr-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-runtime-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-sdk-5.0-5.0.103-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-targeting-pack-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-templates-5.0-5.0.103-1.el7_9.x86_64.rpm rh-dotnet50-netstandard-targeting-pack-2.1-5.0.103-1.el7_9.x86_64.rpm .NET Core on Red Hat Enterprise Linux Server (v. 7): Source: rh-dotnet50-dotnet-5.0.103-1.el7_9.src.rpm x86_64: rh-dotnet50-aspnetcore-runtime-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-aspnetcore-targeting-pack-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-5.0.103-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-apphost-pack-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-debuginfo-5.0.103-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-host-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-hostfxr-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-runtime-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-sdk-5.0-5.0.103-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-targeting-pack-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-templates-5.0-5.0.103-1.el7_9.x86_64.rpm rh-dotnet50-netstandard-targeting-pack-2.1-5.0.103-1.el7_9.x86_64.rpm .NET Core on Red Hat Enterprise Linux Workstation (v. 7): Source: rh-dotnet50-dotnet-5.0.103-1.el7_9.src.rpm x86_64: rh-dotnet50-aspnetcore-runtime-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-aspnetcore-targeting-pack-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-5.0.103-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-apphost-pack-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-debuginfo-5.0.103-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-host-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-hostfxr-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-runtime-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-sdk-5.0-5.0.103-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-targeting-pack-5.0-5.0.3-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-templates-5.0-5.0.103-1.el7_9.x86_64.rpm rh-dotnet50-netstandard-targeting-pack-2.1-5.0.103-1.el7_9.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2021-1721 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYCQRkNzjgjWX9erEAQgNpQ//YOPnsrlO2lww9KzO1WQGieOjqQ1xLZxZ YEgR3XbSuOiS0y7an842VNVht52BEh+maxUN3cdZfHqkBmb3+Ax4Tdnh/oH2CuYT lNkzcQcU/XxNWgpYE6Whu7o5+b7hS8e4khpoH3snamtuL62G2ncH07/cQOeWLi4o EixaJXGxfkq7b3UoDqq8iTj/3NQNmOaD72O2Rp2/yYjLWKtBRKq4sK756wpC+iEj qs+/z6NRTpw7swp8zpB2SsKpBhaCleqeVez7TAaDQ+yvT5Hijosn87CdDAMgVHxa rzqPzKaEMO/DYvirp70sm0EWaaEkX6FbR2LJRzKH6AxBWbyboIBnGrE8W/EfrI/f 6qeQZ/+GKMqabT7z7x79RzExgg6GPwdvnI2koD3hgT28CEZpnZZ6fmYMlvD5pfNT yPL8jzGRs725jpk2EsjyrIpNRPXqXgiFhmEA/JD2dr6surGj0UCmvHqEzKgGdHDR K8jG/u93IZhP+ijnxrw0gOnrCHq5chwxxpPaD1LvSgCmULjzks21zLbcB4qOldLH ey6xIPrdQcyRtJBecfb9IAN9ygCZXfz0HdRB+0ChK31D+Bhp2ORbJXxPPWYNVbp9 97pAQ2MYpEYDKUUn5lQ43Qj1WlF2D9+dXquuWYjD+1FZYmSXFfUnIx6HY7asElhc +Hn3J/UvwRI\xefGS -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce

Trust: 2.25

sources: NVD: CVE-2021-1721 // JVNDB: JVNDB-2021-004038 // VULMON: CVE-2021-1721 // PACKETSTORM: 161371 // PACKETSTORM: 161376 // PACKETSTORM: 161372 // PACKETSTORM: 161370 // PACKETSTORM: 161373 // PACKETSTORM: 161375

AFFECTED PRODUCTS

vendor:microsoftmodel:visual studio 2017scope:lteversion:15.9

Trust: 1.0

vendor:microsoftmodel:.net corescope:lteversion:2.1.24

Trust: 1.0

vendor:microsoftmodel:.net corescope:gteversion:2.1

Trust: 1.0

vendor:microsoftmodel:.net corescope:lteversion:3.1.11

Trust: 1.0

vendor:microsoftmodel:visual studio 2017scope:gteversion:15.0

Trust: 1.0

vendor:microsoftmodel:visual studio 2019scope:lteversion:16.8

Trust: 1.0

vendor:microsoftmodel:visual studio 2019scope:gteversion:16.0

Trust: 1.0

vendor:microsoftmodel:powershell corescope:eqversion:7.0

Trust: 1.0

vendor:microsoftmodel:.netscope:gteversion:5.0

Trust: 1.0

vendor:microsoftmodel:powershell corescope:eqversion:7.1

Trust: 1.0

vendor:microsoftmodel:.netscope:lteversion:5.0.2

Trust: 1.0

vendor:microsoftmodel:.net corescope:gteversion:3.1

Trust: 1.0

vendor:マイクロソフトmodel:microsoft visual studioscope: - version: -

Trust: 0.8

vendor:マイクロソフトmodel:powershell corescope:eqversion:7.0

Trust: 0.8

vendor:マイクロソフトmodel:powershell corescope:eqversion:7.1

Trust: 0.8

vendor:マイクロソフトmodel:.net corescope: - version: -

Trust: 0.8

vendor:マイクロソフトmodel:.netscope: - version: -

Trust: 0.8

sources: JVNDB: JVNDB-2021-004038 // NVD: CVE-2021-1721

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-1721
value: MEDIUM

Trust: 1.0

secure@microsoft.com: CVE-2021-1721
value: MEDIUM

Trust: 1.0

NVD: CVE-2021-1721
value: MEDIUM

Trust: 0.8

CNNVD: CNNVD-202102-667
value: MEDIUM

Trust: 0.6

VULMON: CVE-2021-1721
value: MEDIUM

Trust: 0.1

nvd@nist.gov: CVE-2021-1721
severity: MEDIUM
baseScore: 4.3
vectorString: AV:N/AC:M/AU:N/C:N/I:N/A:P
accessVector: NETWORK
accessComplexity: MEDIUM
authentication: NONE
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: PARTIAL
exploitabilityScore: 8.6
impactScore: 2.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.9

nvd@nist.gov: CVE-2021-1721
baseSeverity: MEDIUM
baseScore: 6.5
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: REQUIRED
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
exploitabilityScore: 2.8
impactScore: 3.6
version: 3.1

Trust: 2.0

NVD: CVE-2021-1721
baseSeverity: MEDIUM
baseScore: 6.5
vectorString: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: REQUIRED
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: VULMON: CVE-2021-1721 // JVNDB: JVNDB-2021-004038 // CNNVD: CNNVD-202102-667 // NVD: CVE-2021-1721 // NVD: CVE-2021-1721

PROBLEMTYPE DATA

problemtype:NVD-CWE-noinfo

Trust: 1.0

problemtype:Lack of information (CWE-noinfo) [NVD Evaluation ]

Trust: 0.8

sources: JVNDB: JVNDB-2021-004038 // NVD: CVE-2021-1721

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202102-667

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202102-667

PATCH

title:.NET Core and Visual Studio Denial of Service Vulnerability Security Update Guideurl:https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1721

Trust: 0.8

title:Microsoft .NET Core and Microsoft Visual Studio Security vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=141033

Trust: 0.6

title:Red Hat: Important: dotnet3.1 security and bugfix updateurl:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210471 - Security Advisory

Trust: 0.1

title:Red Hat: Important: dotnet5.0 security and bugfix updateurl:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210476 - Security Advisory

Trust: 0.1

title:Red Hat: Important: .NET Core 3.1 on Red Hat Enterprise Linux security and bugfix updateurl:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210472 - Security Advisory

Trust: 0.1

title:Red Hat: Important: .NET Core 2.1 on Red Hat Enterprise Linux security and bugfix updateurl:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210470 - Security Advisory

Trust: 0.1

title:Red Hat: Important: .NET 5.0 on Red Hat Enterprise Linux security and bugfix updateurl:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210473 - Security Advisory

Trust: 0.1

title:Red Hat: Important: dotnet security and bugfix updateurl:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210474 - Security Advisory

Trust: 0.1

title:Arch Linux Advisories: [ASA-202103-17] dotnet-sdk: multiple issuesurl:https://vulmon.com/vendoradvisory?qidtp=arch_linux_advisories&qid=ASA-202103-17

Trust: 0.1

title:Arch Linux Issues: url:https://vulmon.com/vendoradvisory?qidtp=arch_linux_issues&qid=CVE-2021-1721 log

Trust: 0.1

title:Arch Linux Advisories: [ASA-202103-16] dotnet-runtime: multiple issuesurl:https://vulmon.com/vendoradvisory?qidtp=arch_linux_advisories&qid=ASA-202103-16

Trust: 0.1

title: - url:https://www.theregister.co.uk/2021/02/09/microsoft_patch_tuesday/

Trust: 0.1

sources: VULMON: CVE-2021-1721 // JVNDB: JVNDB-2021-004038 // CNNVD: CNNVD-202102-667

EXTERNAL IDS

db:NVDid:CVE-2021-1721

Trust: 3.1

db:JVNDBid:JVNDB-2021-004038

Trust: 0.8

db:PACKETSTORMid:161375

Trust: 0.7

db:AUSCERTid:ESB-2021.0496

Trust: 0.6

db:CNNVDid:CNNVD-202102-667

Trust: 0.6

db:VULMONid:CVE-2021-1721

Trust: 0.1

db:PACKETSTORMid:161371

Trust: 0.1

db:PACKETSTORMid:161376

Trust: 0.1

db:PACKETSTORMid:161372

Trust: 0.1

db:PACKETSTORMid:161370

Trust: 0.1

db:PACKETSTORMid:161373

Trust: 0.1

sources: VULMON: CVE-2021-1721 // JVNDB: JVNDB-2021-004038 // PACKETSTORM: 161371 // PACKETSTORM: 161376 // PACKETSTORM: 161372 // PACKETSTORM: 161370 // PACKETSTORM: 161373 // PACKETSTORM: 161375 // CNNVD: CNNVD-202102-667 // NVD: CVE-2021-1721

REFERENCES

url:https://nvd.nist.gov/vuln/detail/cve-2021-1721

Trust: 2.0

url:https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/cve-2021-1721

Trust: 1.7

url:https://access.redhat.com/security/cve/cve-2021-1721

Trust: 1.2

url:https://www.ipa.go.jp/security/ciadr/vul/20210210-ms.html

Trust: 0.8

url:https://www.jpcert.or.jp/at/2021/at210008.html

Trust: 0.8

url:https://www.redhat.com/mailman/listinfo/rhsa-announce

Trust: 0.6

url:https://bugzilla.redhat.com/):

Trust: 0.6

url:https://access.redhat.com/security/team/key/

Trust: 0.6

url:https://access.redhat.com/articles/11258

Trust: 0.6

url:https://access.redhat.com/security/team/contact/

Trust: 0.6

url:https://access.redhat.com/security/updates/classification/#important

Trust: 0.6

url:https://packetstormsecurity.com/files/161375/red-hat-security-advisory-2021-0474-01.html

Trust: 0.6

url:https://msrc.microsoft.com/update-guide/vulnerability/cve-2021-1721

Trust: 0.6

url:https://www.auscert.org.au/bulletins/esb-2021.0496

Trust: 0.6

url:https://vigilance.fr/vulnerability/microsoft-net-core-vulnerabilities-of-february-2021-34547

Trust: 0.6

url:https://access.redhat.com/errata/rhsa-2021:0471

Trust: 0.2

url:https://cwe.mitre.org/data/definitions/.html

Trust: 0.1

url:https://nvd.nist.gov

Trust: 0.1

url:https://exchange.xforce.ibmcloud.com/vulnerabilities/195571

Trust: 0.1

url:https://access.redhat.com/errata/rhsa-2021:0473

Trust: 0.1

url:https://access.redhat.com/errata/rhsa-2021:0476

Trust: 0.1

url:https://access.redhat.com/errata/rhsa-2021:0472

Trust: 0.1

url:https://access.redhat.com/errata/rhsa-2021:0470

Trust: 0.1

url:https://access.redhat.com/errata/rhsa-2021:0474

Trust: 0.1

sources: VULMON: CVE-2021-1721 // JVNDB: JVNDB-2021-004038 // PACKETSTORM: 161371 // PACKETSTORM: 161376 // PACKETSTORM: 161372 // PACKETSTORM: 161370 // PACKETSTORM: 161373 // PACKETSTORM: 161375 // CNNVD: CNNVD-202102-667 // NVD: CVE-2021-1721

CREDITS

Red Hat

Trust: 1.2

sources: PACKETSTORM: 161371 // PACKETSTORM: 161376 // PACKETSTORM: 161372 // PACKETSTORM: 161370 // PACKETSTORM: 161373 // PACKETSTORM: 161375 // CNNVD: CNNVD-202102-667

SOURCES

db:VULMONid:CVE-2021-1721
db:JVNDBid:JVNDB-2021-004038
db:PACKETSTORMid:161371
db:PACKETSTORMid:161376
db:PACKETSTORMid:161372
db:PACKETSTORMid:161370
db:PACKETSTORMid:161373
db:PACKETSTORMid:161375
db:CNNVDid:CNNVD-202102-667
db:NVDid:CVE-2021-1721

LAST UPDATE DATE

2024-08-14T15:22:23.334000+00:00


SOURCES UPDATE DATE

db:VULMONid:CVE-2021-1721date:2021-02-26T00:00:00
db:JVNDBid:JVNDB-2021-004038date:2021-11-12T05:18:00
db:CNNVDid:CNNVD-202102-667date:2021-08-17T00:00:00
db:NVDid:CVE-2021-1721date:2023-12-29T17:15:53.590

SOURCES RELEASE DATE

db:VULMONid:CVE-2021-1721date:2021-02-25T00:00:00
db:JVNDBid:JVNDB-2021-004038date:2021-11-12T00:00:00
db:PACKETSTORMid:161371date:2021-02-11T15:15:26
db:PACKETSTORMid:161376date:2021-02-11T15:18:57
db:PACKETSTORMid:161372date:2021-02-11T15:15:37
db:PACKETSTORMid:161370date:2021-02-11T15:15:09
db:PACKETSTORMid:161373date:2021-02-11T15:15:47
db:PACKETSTORMid:161375date:2021-02-11T15:18:50
db:CNNVDid:CNNVD-202102-667date:2021-02-09T00:00:00
db:NVDid:CVE-2021-1721date:2021-02-25T23:15:13.210