PT-2019-10257 · Dropbox · Dropbox Lepton

Hongxuchen · Published 2019-04-23 · Updated 2020-08-24 · CVE-2018-20819

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Dropbox Lepton version 1.2.1

Description: The issue is related to a missing check of header payloads in the decompression component, specifically in the io/ZlibCompression.cc file. This allows attackers to craft a jpg image file that can cause a denial of service, resulting in a heap-based buffer overflow and application crash, or possibly have other unspecified impacts.

Recommendations: For version 1.2.1, update to a newer version that includes a fix for the missing check of header payloads in the decompression component to prevent the heap-based buffer overflow and application crash.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2018-20819

Affected Products

Dropbox Lepton

References · 3

• 🔥 https://github.com/dropbox/lepton/issues/112 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2018-20819 · Security Note
• https://osv.dev/vulnerability/CVE-2018-20819 · Vendor Advisory