Buffer overflow in lepton - CVE-2018-20819
Published: April 23, 2019 / Updated: August 8, 2020
Vulnerability identifier: #VU35975
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2018-20819
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
lepton
lepton
Software vendor:
Dropbox
Dropbox
Description
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
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.
Remediation
Install update from vendor's website.