CVE-2020-7453

In FreeBSD 12.1-STABLE before r359021, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r359020, and 11.3-RELEASE before 11.3-RELEASE-p7, a missing null termination check in the jail_set configuration option "osrelease" may return more bytes with a subsequent jail_get system call allowing a malicious jail superuser with permission to create nested jails to read kernel memory.

CVSS v3 6.0 MEDIUM
CVSS v2.0 3.3 LOW

6.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

3.3^/10

CVSS v2.0 : LOW

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

Exploitability : 3.4 / Impact : 4.9

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:08.jail.asc	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:freebsd:freebsd:11.3:-::::::
	cpe:2.3:o:freebsd:freebsd:11.3:p1::::::
	cpe:2.3:o:freebsd:freebsd:11.3:p2::::::
	cpe:2.3:o:freebsd:freebsd:11.3:p3::::::
	cpe:2.3:o:freebsd:freebsd:11.3:p4::::::
	cpe:2.3:o:freebsd:freebsd:11.3:p5::::::
	cpe:2.3:o:freebsd:freebsd:11.3:p6::::::
	cpe:2.3:o:freebsd:freebsd:12.1:-::::::
	cpe:2.3:o:freebsd:freebsd:12.1:p1::::::
	cpe:2.3:o:freebsd:freebsd:12.1:p2::::::

History

No history.

Information

Published : 2020-04-29 00:15

Updated : 2024-02-04 21:00

NVD link : CVE-2020-7453

Mitre link : CVE-2020-7453

CVE.ORG link : CVE-2020-7453

JSON object : View

Products Affected

freebsd

freebsd

CWE

CWE-754

Improper Check for Unusual or Exceptional Conditions

{"id": "CVE-2020-7453", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 3.3, "accessVector": "LOCAL", "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "LOW", "obtainAllPrivilege": false, "exploitabilityScore": 3.4, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.0, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 0.8}]}, "published": "2020-04-29T00:15:12.093", "references": [{"url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-20:08.jail.asc", "tags": ["Patch", "Vendor Advisory"], "source": "secteam@freebsd.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-754"}]}], "descriptions": [{"lang": "en", "value": "In FreeBSD 12.1-STABLE before r359021, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r359020, and 11.3-RELEASE before 11.3-RELEASE-p7, a missing null termination check in the jail_set configuration option \"osrelease\" may return more bytes with a subsequent jail_get system call allowing a malicious jail superuser with permission to create nested jails to read kernel memory."}, {"lang": "es", "value": "En FreeBSD versiones 12.1-ESTABLE anteriores a r359021, versiones 12.1-RELEASE anteriores a 12.1-RELEASE-p3, versiones 11.3-ESTABLE anteriores a r359020 y versiones 11.3-RELEASE anteriores a 11.3-RELEASE-p7, una falta de comprobaci\u00f3n de terminaci\u00f3n null en la opci\u00f3n de configuraci\u00f3n \"osrelease\" de jail_set puede devolver m\u00e1s bytes con una llamada posterior al sistema jail_get que permite a un superusuario de jaula (jail) malicioso con permiso para crear jaulas (jails) anidadas leer la memoria del kernel."}], "lastModified": "2020-05-06T16:47:26.720", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F35957CE-AF9F-40CA-BDD1-FA6A0E73783F"}, {"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EA929713-B797-494A-853D-C121D9D69519"}, {"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3C3D8EDC-91D3-45B2-AC1D-EF4346D4A714"}, {"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EA5006FF-06A5-4D95-BF5B-29F26248D11F"}, {"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A705031B-FD63-4076-B92E-E826E11D7111"}, {"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "11C1EFB1-68E5-45F4-A7E1-744574F290D1"}, {"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "25F649A7-9265-4552-8934-BCE083363982"}, {"criteria": "cpe:2.3:o:freebsd:freebsd:12.1:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BD730B6A-F123-4685-ACB3-4F20AAAB77F3"}, {"criteria": "cpe:2.3:o:freebsd:freebsd:12.1:p1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "508150E3-2C0C-4EEB-BFC9-BB5CEB404C06"}, {"criteria": "cpe:2.3:o:freebsd:freebsd:12.1:p2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B5D692EF-A5D7-430E-91BA-4CD137343B66"}], "operator": "OR"}]}], "sourceIdentifier": "secteam@freebsd.org"}