CVE-2020-26174

tangro Business Workflow before 1.18.1 requests a list of allowed filetypes from the server and restricts uploads to the filetypes contained in this list. However, this restriction is enforced in the browser (client-side) and can be circumvented. This allows an attacker to upload any file as an attachment to a workitem.

CVSS v3 8.8 HIGH
CVSS v2.0 6.5 MEDIUM

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.5^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://blog.to.com/advisory-tangro-bwf-1-17-5-multiple-vulnerabilities/	Exploit Third Party Advisory
https://www.tangro.de/	Product

Configurations

Configuration 1 (hide)

cpe:2.3:a:tangro:business_workflow:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-12-18 10:15

Updated : 2024-02-04 21:23

NVD link : CVE-2020-26174

Mitre link : CVE-2020-26174

CVE.ORG link : CVE-2020-26174

JSON object : View

Products Affected

tangro

business_workflow

CWE

CWE-434

Unrestricted Upload of File with Dangerous Type

{"id": "CVE-2020-26174", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "published": "2020-12-18T10:15:12.917", "references": [{"url": "https://blog.to.com/advisory-tangro-bwf-1-17-5-multiple-vulnerabilities/", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.tangro.de/", "tags": ["Product"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-434"}]}], "descriptions": [{"lang": "en", "value": "tangro Business Workflow before 1.18.1 requests a list of allowed filetypes from the server and restricts uploads to the filetypes contained in this list. However, this restriction is enforced in the browser (client-side) and can be circumvented. This allows an attacker to upload any file as an attachment to a workitem."}, {"lang": "es", "value": "Tangro Business Workflow versiones anteriores a 1.18.1, requiere una lista de tipos de archivos permitidos del servidor y restringe las cargas a los tipos de archivos contenidos en esta lista. Sin embargo, esta restricci\u00f3n es aplicada en el navegador (del lado del cliente) y puede ser omitida. Esto permite a un atacante cargar cualquier archivo como adjunto a un elemento de trabajo"}], "lastModified": "2020-12-21T18:47:44.893", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:tangro:business_workflow:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BAE2FD7D-E1ED-4E14-BD48-CBB2BDFFE086", "versionEndExcluding": "1.18.1"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}