CVE-2019-20172

Kernel/VM/MemoryManager.cpp in SerenityOS before 2019-12-30 does not reject syscalls with pointers into the kernel-only virtual address space, which allows local users to gain privileges by overwriting a return address that was found on the kernel stack.

CVSS v3 7.8 HIGH
CVSS v2.0 4.6 MEDIUM

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

4.6^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/Fire30/CTF-WRITEUPS/tree/master/36c3_ctf/wisdom	Exploit Third Party Advisory
https://github.com/SerenityOS/serenity/commit/0fc24fe2564736689859e7edfa177a86dac36bf9	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:serenityos:serenityos:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2019-12-31 03:15

Updated : 2024-02-04 20:39

NVD link : CVE-2019-20172

Mitre link : CVE-2019-20172

CVE.ORG link : CVE-2019-20172

JSON object : View

Products Affected

serenityos

serenityos

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

{"id": "CVE-2019-20172", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.6, "accessVector": "LOCAL", "vectorString": "AV:L/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": "MEDIUM", "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": "2019-12-31T03:15:10.467", "references": [{"url": "https://github.com/Fire30/CTF-WRITEUPS/tree/master/36c3_ctf/wisdom", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/SerenityOS/serenity/commit/0fc24fe2564736689859e7edfa177a86dac36bf9", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-119"}]}], "descriptions": [{"lang": "en", "value": "Kernel/VM/MemoryManager.cpp in SerenityOS before 2019-12-30 does not reject syscalls with pointers into the kernel-only virtual address space, which allows local users to gain privileges by overwriting a return address that was found on the kernel stack."}, {"lang": "es", "value": "El archivo Kernel/VM/MemoryManager.cpp en SerenityOS antes de 30-12-2019 no rechaza las llamadas al sistema con punteros en el espacio de direcciones virtuales solo del kernel, lo que permite a usuarios locales alcanzar privilegios sobrescribiendo una direcci\u00f3n de retorno que fue encontrada en la pila del kernel."}], "lastModified": "2022-12-08T18:55:41.790", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:serenityos:serenityos:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5EA34FF9-B6AD-4751-86A8-7D8ED9EC6DA0", "versionEndExcluding": "2019-12-30"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}