CVE-2018-20819

io/ZlibCompression.cc in the decompression component in Dropbox Lepton 1.2.1 allows attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact by crafting a jpg image file. The root cause is a missing check of header payloads that may be (incorrectly) larger than the maximum file size.

CVSS v3 7.8 HIGH
CVSS v2.0 6.8 MEDIUM

7.8^/10

CVSS v3 : HIGH

V3 Legend

Vector : AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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

6.8^/10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/dropbox/lepton/issues/112	Exploit Issue Tracking Patch Third Party Advisory
https://github.com/dropbox/lepton/issues/112	Exploit Issue Tracking Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:dropbox:lepton:1.2.1:*:*:*:*:*:*:*

History

21 Nov 2024, 04:02

Type	Values Removed	Values Added
References	~~() https://github.com/dropbox/lepton/issues/112 - Exploit, Issue Tracking, Patch, Third Party Advisory~~	() https://github.com/dropbox/lepton/issues/112 - Exploit, Issue Tracking, Patch, Third Party Advisory

Information

Published : 2019-04-23 14:29

Updated : 2024-11-21 04:02

NVD link : CVE-2018-20819

Mitre link : CVE-2018-20819

CVE.ORG link : CVE-2018-20819

JSON object : View

Products Affected

dropbox

lepton

CWE

CWE-787

Out-of-bounds Write

{"id": "CVE-2018-20819", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.8, "accessVector": "NETWORK", "vectorString": "AV:N/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": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/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": "2019-04-23T14:29:00.320", "references": [{"url": "https://github.com/dropbox/lepton/issues/112", "tags": ["Exploit", "Issue Tracking", "Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/dropbox/lepton/issues/112", "tags": ["Exploit", "Issue Tracking", "Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "io/ZlibCompression.cc in the decompression component in Dropbox Lepton 1.2.1 allows attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact by crafting a jpg image file. The root cause is a missing check of header payloads that may be (incorrectly) larger than the maximum file size."}, {"lang": "es", "value": "IO/ZlibCompression. CC en el componente de descompresi\u00f3n en Dropbox LEPTON versi\u00f3n 1.2.1 permite a los atacantes causar una Denegaci\u00f3n de Servicio (desbordamiento de b\u00fafer basado en mont\u00f3n y bloqueo de la aplicaci\u00f3n) o posiblemente tener otro impacto no especificado mediante la creaci\u00f3n de un archivo de imagen jpg. La causa ra\u00edz es una comprobaci\u00f3n faltante de cargas de encabezado que pueden ser (incorrectamente) mayores que el tama\u00f1o m\u00e1ximo de archivo."}], "lastModified": "2024-11-21T04:02:15.173", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:dropbox:lepton:1.2.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6DCDBF54-A4B3-4D67-A014-6ECC38D58621"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}

7.8 /10