CVE-2020-11498

Slack Nebula through 1.1.0 contains a relative path vulnerability that allows a low-privileged attacker to execute code in the context of the root user via tun_darwin.go or tun_windows.go. A user can also use Nebula to execute arbitrary code in the user's own context, e.g., for user-level persistence or to bypass security controls. NOTE: the vendor states that this "requires a high degree of access and other preconditions that are tough to achieve."

CVSS v3 8.8 HIGH
CVSS v2.0 8.5 HIGH

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

8.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:M/Au:S/C:C/I:C/A:C

Exploitability : 6.8 / Impact : 10.0

Access Vector NETWORK

Access Complexity MEDIUM

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
http://www.pwn3d.org/posts/7918501-slack-nebula-relative-path-bug-bounty-disclosure	Exploit Third Party Advisory
https://github.com/slackhq/nebula/pull/191	Patch Third Party Advisory
http://www.pwn3d.org/posts/7918501-slack-nebula-relative-path-bug-bounty-disclosure	Exploit Third Party Advisory
https://github.com/slackhq/nebula/pull/191	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:slack:nebula:*:*:*:*:*:*:*:*

History

21 Nov 2024, 04:58

Type	Values Removed	Values Added
References	~~() http://www.pwn3d.org/posts/7918501-slack-nebula-relative-path-bug-bounty-disclosure - Exploit, Third Party Advisory~~	() http://www.pwn3d.org/posts/7918501-slack-nebula-relative-path-bug-bounty-disclosure - Exploit, Third Party Advisory
References	~~() https://github.com/slackhq/nebula/pull/191 - Patch, Third Party Advisory~~	() https://github.com/slackhq/nebula/pull/191 - Patch, Third Party Advisory

Information

Published : 2020-04-02 23:15

Updated : 2024-11-21 04:58

NVD link : CVE-2020-11498

Mitre link : CVE-2020-11498

CVE.ORG link : CVE-2020-11498

JSON object : View

Products Affected

slack

nebula

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

{"id": "CVE-2020-11498", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 8.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:S/C:C/I:C/A:C", "authentication": "SINGLE", "integrityImpact": "COMPLETE", "accessComplexity": "MEDIUM", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 6.8, "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}]}, "published": "2020-04-02T23:15:13.033", "references": [{"url": "http://www.pwn3d.org/posts/7918501-slack-nebula-relative-path-bug-bounty-disclosure", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/slackhq/nebula/pull/191", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.pwn3d.org/posts/7918501-slack-nebula-relative-path-bug-bounty-disclosure", "tags": ["Exploit", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/slackhq/nebula/pull/191", "tags": ["Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-22"}]}], "descriptions": [{"lang": "en", "value": "Slack Nebula through 1.1.0 contains a relative path vulnerability that allows a low-privileged attacker to execute code in the context of the root user via tun_darwin.go or tun_windows.go. A user can also use Nebula to execute arbitrary code in the user's own context, e.g., for user-level persistence or to bypass security controls. NOTE: the vendor states that this \"requires a high degree of access and other preconditions that are tough to achieve.\""}, {"lang": "es", "value": "Slack Nebula versiones hasta 1.1.0, contiene una vulnerabilidad de ruta relativa que permite a un atacante poco privilegiado ejecutar c\u00f3digo en el contexto del usuario root por medio del archivo tun_darwin.go o tun_windows.go. Un usuario tambi\u00e9n puede usar Nebula para ejecutar c\u00f3digo arbitrario en el propio contexto del usuario, por ejemplo, para persistencia de nivel de usuario o para omitir los controles de seguridad. NOTA: el proveedor declara que esto \"requiere un alto grado de acceso y otras condiciones previas que son dif\u00edciles de alcanzar\"."}], "lastModified": "2024-11-21T04:58:01.207", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:slack:nebula:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "773132C3-0EFA-46EF-B858-ECBE04B5E0F0", "versionEndIncluding": "1.1.0"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}