CVE-2020-14976

GNS3 ubridge through 0.9.18 on macOS, as used in GNS3 server before 2.1.17, allows a local attacker to read arbitrary files because it handles configuration-file errors by printing the configuration file while executing in a setuid root context.

CVSS v3 5.5 MEDIUM
CVSS v2.0 4.9 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

4.9^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.9 / Impact : 6.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://github.com/GNS3/gns3-server/releases/tag/v2.1.17	Release Notes Third Party Advisory
https://github.com/GNS3/ubridge/commit/2eb0d1dab6a6de76cf3556130a2d52af101077db	Patch Third Party Advisory
https://theevilbit.github.io/posts/	Exploit Third Party Advisory
https://www.gns3.com/	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:gns3:ubridge:*:*:*:*:*:macos:*:*

cpe:2.3:a:gns3:gns3:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-06-23 20:15

Updated : 2021-07-21 11:39

NVD link : CVE-2020-14976

Mitre link : CVE-2020-14976

CVE.ORG link : CVE-2020-14976

JSON object : View

Products Affected

gns3

ubridge
gns3

CWE

CWE-269

Improper Privilege Management

{"id": "CVE-2020-14976", "cveTags": [], "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:C/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "COMPLETE"}, "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": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2020-06-23T20:15:12.927", "references": [{"url": "https://github.com/GNS3/gns3-server/releases/tag/v2.1.17", "tags": ["Release Notes", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/GNS3/ubridge/commit/2eb0d1dab6a6de76cf3556130a2d52af101077db", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://theevilbit.github.io/posts/", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.gns3.com/", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-269"}]}], "descriptions": [{"lang": "en", "value": "GNS3 ubridge through 0.9.18 on macOS, as used in GNS3 server before 2.1.17, allows a local attacker to read arbitrary files because it handles configuration-file errors by printing the configuration file while executing in a setuid root context."}, {"lang": "es", "value": "GNS3 ubridge versiones hasta 0.9.18 en macOS, como es usado en el servidor GNS3 anterior a 2.1.17, permite a un atacante local leer archivos arbitrarios porque maneja los errores del archivo de configuraci\u00f3n al imprimir el archivo de configuraci\u00f3n mientras se ejecuta en un contexto root setuid"}], "lastModified": "2021-07-21T11:39:23.747", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:gns3:ubridge:*:*:*:*:*:macos:*:*", "vulnerable": true, "matchCriteriaId": "AC12F845-737F-4705-BB59-10DE517FFF7D", "versionEndIncluding": "0.9.18"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:gns3:gns3:*:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "B0191C9C-7BAD-4FAE-A6F5-9F0815F37963", "versionEndExcluding": "2.1.17"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}