CVE-2020-9015

** DISPUTED ** Arista DCS-7050QX-32S-R 4.20.9M, DCS-7050CX3-32S-R 4.20.11M, and DCS-7280SRAM-48C6-R 4.22.0.1F devices (and possibly other products) allow attackers to bypass intended TACACS+ shell restrictions via a | character. NOTE: the vendor reports that this is a configuration issue relating to an overly permissive regular expression in the TACACS+ server permitted commands.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
http://packetstormsecurity.com/files/158119/Arista-Restricted-Shell-Escape-Privilege-Escalation.html
https://eos.arista.com/arista-eos-is-not-vulnerable-to-cve-2020-9015/
https://securitybytes.me	Third Party Advisory
https://securitybytes.me/posts/cve-2020-9015/	Broken Link

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:arista:dcs-7050qx-32s-r_firmware:4.20.9m:*:*:*:*:*:*:*

cpe:2.3:h:arista:dcs-7050qx-32s-r:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:arista:dcs-7050cx3-32s-r_firmware:4.20.11m:*:*:*:*:*:*:*

cpe:2.3:h:arista:dcs-7050cx3-32s-r:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:o:arista:dcs-7280sram-48c6-r_firmware:4.22.0.1f:*:*:*:*:*:*:*

cpe:2.3:h:arista:dcs-7280sram-48c6-r:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-02-20 22:15

Updated : 2024-08-04 11:15

NVD link : CVE-2020-9015

Mitre link : CVE-2020-9015

CVE.ORG link : CVE-2020-9015

JSON object : View

Products Affected

arista

dcs-7050cx3-32s-r_firmware
dcs-7050qx-32s-r
dcs-7280sram-48c6-r_firmware
dcs-7050qx-32s-r_firmware
dcs-7050cx3-32s-r
dcs-7280sram-48c6-r

CWE

NVD-CWE-noinfo

{"id": "CVE-2020-9015", "cveTags": [{"tags": ["disputed"], "sourceIdentifier": "cve@mitre.org"}], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2020-02-20T22:15:12.177", "references": [{"url": "http://packetstormsecurity.com/files/158119/Arista-Restricted-Shell-Escape-Privilege-Escalation.html", "source": "cve@mitre.org"}, {"url": "https://eos.arista.com/arista-eos-is-not-vulnerable-to-cve-2020-9015/", "source": "cve@mitre.org"}, {"url": "https://securitybytes.me", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://securitybytes.me/posts/cve-2020-9015/", "tags": ["Broken Link"], "source": "cve@mitre.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "Arista DCS-7050QX-32S-R 4.20.9M, DCS-7050CX3-32S-R 4.20.11M, and DCS-7280SRAM-48C6-R 4.22.0.1F devices (and possibly other products) allow attackers to bypass intended TACACS+ shell restrictions via a | character. NOTE: the vendor reports that this is a configuration issue relating to an overly permissive regular expression in the TACACS+ server permitted commands"}, {"lang": "es", "value": "** EN DISPUTA ** Los dispositivos Arista DCS-7050QX-32S-R versi\u00f3n 4.20.9M, DCS-7050CX3-32S-R versi\u00f3n 4.20.11M y DCS-7280SRAM-48C6-R versi\u00f3n 4.22.0.1F (y posiblemente otros productos), permiten a atacantes omitir las restricciones de shell TACACS+ previstas por medio de un car\u00e1cter |. NOTA: el proveedor informa que este es un problema de configuraci\u00f3n relacionado con una expresi\u00f3n regular demasiado permisiva en los comandos permitidos del servidor TACACS +."}], "lastModified": "2024-08-04T11:15:38.970", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:arista:dcs-7050qx-32s-r_firmware:4.20.9m:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FFBADFE5-A368-4CA9-AD72-400DFBF381AF"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:arista:dcs-7050qx-32s-r:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "0630F568-230E-4067-B80E-4280CA371B35"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:arista:dcs-7050cx3-32s-r_firmware:4.20.11m:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F7F04E8A-9FA0-4199-8F62-291EC835B154"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:arista:dcs-7050cx3-32s-r:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "E6F270D9-1B05-4CBC-BEE0-0850C94BB9F0"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:arista:dcs-7280sram-48c6-r_firmware:4.22.0.1f:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "09B0C068-0FBB-48BA-B5F4-A427D40CF110"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:arista:dcs-7280sram-48c6-r:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "4592091C-AD4A-4904-9EFF-C85AABFD7CDE"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}