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CVE-2018-20819

Published: 23 April 2019

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.

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
lepton
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code not present)
cosmic Not vulnerable
(code not present)
disco Not vulnerable
(code not present)
trusty Does not exist

upstream Needs triage

xenial Does not exist

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H