CVE-2021-43412

An issue was discovered in GNU Hurd before 0.9 20210404-9. libports accepts fake notification messages from any client on any port, which can lead to port use-after-free. This can be exploited for local privilege escalation to get full root access.

CVSS v3 7.8 HIGH
CVSS v2.0 7.2 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

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

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00079.html	Exploit Mailing List Vendor Advisory
https://www.mail-archive.com/bug-hurd%40gnu.org/msg32116.html

Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:hurd:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-11-07 18:15

Updated : 2023-11-07 03:39

NVD link : CVE-2021-43412

Mitre link : CVE-2021-43412

CVE.ORG link : CVE-2021-43412

JSON object : View

Products Affected

gnu

hurd

CWE

CWE-416

Use After Free

{"id": "CVE-2021-43412", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.2, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "baseSeverity": "HIGH", "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": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/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": 1.8}]}, "published": "2021-11-07T18:15:07.737", "references": [{"url": "https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00079.html", "tags": ["Exploit", "Mailing List", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.mail-archive.com/bug-hurd%40gnu.org/msg32116.html", "source": "cve@mitre.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "An issue was discovered in GNU Hurd before 0.9 20210404-9. libports accepts fake notification messages from any client on any port, which can lead to port use-after-free. This can be exploited for local privilege escalation to get full root access."}, {"lang": "es", "value": "Se ha detectado un problema en GNU Hurd versiones anteriores a 0.9 20210404-9. libports acepta mensajes de notificaci\u00f3n falsos de cualquier cliente en cualquier puerto, lo que puede conllevar a un uso de memoria previamente liberada del puerto. Esto puede ser explotado para la escalada de privilegios locales para conseguir acceso completo de root"}], "lastModified": "2023-11-07T03:39:21.360", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:gnu:hurd:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F6A9E403-F3B3-4336-9A64-AEE7A1E2A0D9", "versionEndExcluding": "0.9.20210404-9"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}