CVE-2020-35766

The test suite in libopendkim in OpenDKIM through 2.10.3 allows local users to gain privileges via a symlink attack against the /tmp/testkeys file (related to t-testdata.h, t-setup.c, and t-cleanup.c). NOTE: this is applicable to persons who choose to engage in the "A number of self-test programs are included here for unit-testing the library" situation.

CVSS v3 7.8 HIGH
CVSS v2.0 4.4 MEDIUM

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.4^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.4 / Impact : 6.4

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/trusteddomainproject/OpenDKIM/issues/113	Exploit Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:opendkim:opendkim:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-12-28 20:15

Updated : 2024-02-04 21:23

NVD link : CVE-2020-35766

Mitre link : CVE-2020-35766

CVE.ORG link : CVE-2020-35766

JSON object : View

Products Affected

opendkim

opendkim

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

{"id": "CVE-2020-35766", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.4, "accessVector": "LOCAL", "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 3.4, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2020-12-28T20:15:13.260", "references": [{"url": "https://github.com/trusteddomainproject/OpenDKIM/issues/113", "tags": ["Exploit", "Patch", "Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-59"}]}], "descriptions": [{"lang": "en", "value": "The test suite in libopendkim in OpenDKIM through 2.10.3 allows local users to gain privileges via a symlink attack against the /tmp/testkeys file (related to t-testdata.h, t-setup.c, and t-cleanup.c). NOTE: this is applicable to persons who choose to engage in the \"A number of self-test programs are included here for unit-testing the library\" situation."}, {"lang": "es", "value": "El conjunto de prueba en libopendkim en OpenDKIM versiones hasta 2.10.3, permite a usuarios locales alcanzar privilegios por medio de un ataque de tipo symlink contra el archivo /tmp/testkeys (relacionado con los archivos t-testdata.h, t-setup.c y t-cleanup.c) . NOTA: esto es aplicable a las personas que eligen participar en la situaci\u00f3n \"A number of self-test programs are included here for unit-testing the library\""}], "lastModified": "2020-12-30T16:38:57.577", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:opendkim:opendkim:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0B747EF7-FA4F-4C72-8008-B595EBA29911", "versionEndIncluding": "2.10.3"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}