CVE-2021-40084

opensysusers through 0.6 does not safely use eval on files in sysusers.d that may contain shell metacharacters. For example, it allows command execution via a crafted GECOS field whereas systemd-sysusers (a program with the same specification) does not do that.

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
https://bugs.debian.org/992058	Exploit Mailing List Third Party Advisory
https://github.com/artix-linux/opensysusers/releases	Release Notes Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:artixlinux:opensysusers:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-08-25 01:15

Updated : 2022-07-12 17:42

NVD link : CVE-2021-40084

Mitre link : CVE-2021-40084

CVE.ORG link : CVE-2021-40084

JSON object : View

Products Affected

artixlinux

opensysusers

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

{"id": "CVE-2021-40084", "cveTags": [], "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": "2021-08-25T01:15:12.957", "references": [{"url": "https://bugs.debian.org/992058", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/artix-linux/opensysusers/releases", "tags": ["Release Notes", "Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-94"}]}], "descriptions": [{"lang": "en", "value": "opensysusers through 0.6 does not safely use eval on files in sysusers.d that may contain shell metacharacters. For example, it allows command execution via a crafted GECOS field whereas systemd-sysusers (a program with the same specification) does not do that."}, {"lang": "es", "value": "opensysusers versiones hasta 0.6, no usa de forma segura eval en los archivos de sysusers.d que pueden contener metacaracteres del shell. Por ejemplo, permite la ejecuci\u00f3n de comandos por medio de un campo GECOS dise\u00f1ado, mientras que systemd-sysusers (un programa con la misma especificaci\u00f3n) no lo hace."}], "lastModified": "2022-07-12T17:42:04.277", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:artixlinux:opensysusers:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3D5A394E-911D-4F5E-BC10-64AA3FA6B0E3", "versionEndIncluding": "0.6"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}