CVE-2021-3635

A flaw was found in the Linux kernel netfilter implementation in versions prior to 5.5-rc7. A user with root (CAP_SYS_ADMIN) access is able to panic the system when issuing netfilter netflow commands.

CVSS v3 4.4 MEDIUM
CVSS v2.0 4.9 MEDIUM

4.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.9^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:N/C:N/I:N/A:C

Exploitability : 3.9 / Impact : 6.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1976946	Issue Tracking Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:5.5:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.5:rc2::::::
	cpe:2.3:o:linux:linux_kernel:5.5:rc3::::::
	cpe:2.3:o:linux:linux_kernel:5.5:rc4::::::
	cpe:2.3:o:linux:linux_kernel:5.5:rc5::::::
	cpe:2.3:o:linux:linux_kernel:5.5:rc6::::::

Configuration 2 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux:6.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*

Configuration 3 (hide)

cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-08-13 14:15

Updated : 2024-02-28 18:28

NVD link : CVE-2021-3635

Mitre link : CVE-2021-3635

CVE.ORG link : CVE-2021-3635

JSON object : View

Products Affected

linux

linux_kernel

fedoraproject

fedora

redhat

enterprise_linux

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

{"id": "CVE-2021-3635", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.9, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 6.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.4, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 0.8}]}, "published": "2021-08-13T14:15:07.877", "references": [{"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1976946", "tags": ["Issue Tracking", "Third Party Advisory"], "source": "secalert@redhat.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-119"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in the Linux kernel netfilter implementation in versions prior to 5.5-rc7. A user with root (CAP_SYS_ADMIN) access is able to panic the system when issuing netfilter netflow commands."}, {"lang": "es", "value": "Se ha detectado un fallo en la implementaci\u00f3n del netfilter del kernel de Linux en versiones anteriores a 5.5-rc7. Un usuario con acceso de root (CAP_SYS_ADMIN) es capaz de hacer entrar en p\u00e1nico al sistema cuando emite comandos netfilter netflow."}], "lastModified": "2021-08-23T20:33:15.447", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5835B8E0-83CB-4B09-A21A-3CB59AF41F62", "versionEndExcluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.5:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17CCD88F-373D-4BB5-B62E-8B55B05E2C31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.5:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "42E076B5-A5E0-49BB-A290-60EC6BF3D4B3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.5:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8C58602A-1D3D-4A07-AB88-AB5B403D3E8C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.5:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "54191273-DBF7-4AF6-8039-36DFDEBF4529"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.5:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7A986E40-065E-4807-B171-802B9460E47E"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.5:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "911090B3-B2FF-4DD4-A4A4-1BEA41209886"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2F6AB192-9D7D-4A9A-8995-E53A9DE9EAFC"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}