CVE-2021-3967 - Vulnerability Details - OpenCVE

Description

Improper Access Control in GitHub repository zulip/zulip prior to 4.10.

Published: 2022-02-26

Score: 8.8 High

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

zulip

zulip/zulip

affected

Version	Status	Constraints
`unspecified`	affected	< 4.10

Configuration 1 [-]

cpe:2.3:a:zulip:zulip:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2021-27172	Improper Access Control in GitHub repository zulip/zulip prior to 4.10.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Attack Vector Network

Attack Complexity High

Privileges Required High

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00306.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/zulip/zulip/commit/d5db254ca8167995a1654d1c45ffc74b2fade39a
https://huntr.dev/bounties/2928a625-0467-4a0a-b4e2-e27322786686

History

No history.

Subscriptions

Zulip Zulip

MITRE

Status: PUBLISHED

Assigner: @huntrdev

Published: 2022-02-26T23:00:10.000Z

Updated: 2024-08-03T17:09:09.862Z

Reserved: 2021-11-17T00:00:00.000Z

Link: CVE-2021-3967

Vulnrichment

No data.

NVD

Status : Modified

Published: 2022-02-26T23:15:08.830

Modified: 2024-11-21T06:23:15.243

Link: CVE-2021-3967

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

{"containers": {"cna": {"affected": [{"product": "zulip/zulip", "vendor": "zulip", "versions": [{"lessThan": "4.10", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Improper Access Control in GitHub repository zulip/zulip prior to 4.10."}], "metrics": [{"cvssV3_0": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L", "version": "3.0"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-284", "description": "CWE-284 Improper Access Control", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2022-02-26T23:00:10.000Z", "orgId": "c09c270a-b464-47c1-9133-acb35b22c19a", "shortName": "@huntrdev"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://huntr.dev/bounties/2928a625-0467-4a0a-b4e2-e27322786686"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/zulip/zulip/commit/d5db254ca8167995a1654d1c45ffc74b2fade39a"}], "source": {"advisory": "2928a625-0467-4a0a-b4e2-e27322786686", "discovery": "EXTERNAL"}, "title": "Improper Access Control in zulip/zulip", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@huntr.dev", "ID": "CVE-2021-3967", "STATE": "PUBLIC", "TITLE": "Improper Access Control in zulip/zulip"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "zulip/zulip", "version": {"version_data": [{"version_affected": "<", "version_value": "4.10"}]}}]}, "vendor_name": "zulip"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Improper Access Control in GitHub repository zulip/zulip prior to 4.10."}]}, "impact": {"cvss": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L", "version": "3.0"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-284 Improper Access Control"}]}]}, "references": {"reference_data": [{"name": "https://huntr.dev/bounties/2928a625-0467-4a0a-b4e2-e27322786686", "refsource": "CONFIRM", "url": "https://huntr.dev/bounties/2928a625-0467-4a0a-b4e2-e27322786686"}, {"name": "https://github.com/zulip/zulip/commit/d5db254ca8167995a1654d1c45ffc74b2fade39a", "refsource": "MISC", "url": "https://github.com/zulip/zulip/commit/d5db254ca8167995a1654d1c45ffc74b2fade39a"}]}, "source": {"advisory": "2928a625-0467-4a0a-b4e2-e27322786686", "discovery": "EXTERNAL"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T17:09:09.862Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://huntr.dev/bounties/2928a625-0467-4a0a-b4e2-e27322786686"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/zulip/zulip/commit/d5db254ca8167995a1654d1c45ffc74b2fade39a"}]}]}, "cveMetadata": {"assignerOrgId": "c09c270a-b464-47c1-9133-acb35b22c19a", "assignerShortName": "@huntrdev", "cveId": "CVE-2021-3967", "datePublished": "2022-02-26T23:00:10.000Z", "dateReserved": "2021-11-17T00:00:00.000Z", "dateUpdated": "2024-08-03T17:09:09.862Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:zulip:zulip:*:*:*:*:*:*:*:*", "matchCriteriaId": "B0DE9BF6-B7FF-47B4-908E-FA6D97D0A032", "versionEndExcluding": "4.10", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "Improper Access Control in GitHub repository zulip/zulip prior to 4.10."}, {"lang": "es", "value": "Un Control de Acceso Inapropiado en el repositorio de GitHub zulip/zulip versiones anteriores a 4.10."}], "id": "CVE-2021-3967", "lastModified": "2024-11-21T06:23:15.243", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 6.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L", "version": "3.0"}, "exploitabilityScore": 0.7, "impactScore": 3.4, "source": "security@huntr.dev", "type": "Secondary"}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-02-26T23:15:08.830", "references": [{"source": "security@huntr.dev", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/zulip/zulip/commit/d5db254ca8167995a1654d1c45ffc74b2fade39a"}, {"source": "security@huntr.dev", "tags": ["Exploit", "Third Party Advisory"], "url": "https://huntr.dev/bounties/2928a625-0467-4a0a-b4e2-e27322786686"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/zulip/zulip/commit/d5db254ca8167995a1654d1c45ffc74b2fade39a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://huntr.dev/bounties/2928a625-0467-4a0a-b4e2-e27322786686"}], "sourceIdentifier": "security@huntr.dev", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}], "source": "security@huntr.dev", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}