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CVE-2018-20820

5.5 · MEDIUM

read_ujpg in jpgcoder.cc in Dropbox Lepton 1.2.1 allows attackers to cause a denial-of-service (application runtime crash because of an integer overflow) via a crafted file.

Published Apr 23, 2019CWE-190EPSS 0.96%

Overview

CVE-2018-20820 is a medium-severity vulnerability. It was published on April 23, 2019 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

read_ujpg in jpgcoder.cc in Dropbox Lepton 1.2.1 allows attackers to cause a denial-of-service (application runtime crash because of an integer overflow) via a crafted file.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/dropbox/lepton/commit/6a5ceefac1162783fffd9506a3de39c85c725761GitHubgithub.com/dropbox/lepton/issues/111GitHubgithub.com/dropbox/lepton/commit/6a5ceefac1162783fffd9506a3de39c85c725761GitHubgithub.com/dropbox/lepton/issues/111

How CyberStrike helps

Frequently asked questions

What is CVE-2018-20820?

CVE-2018-20820 is a medium-severity vulnerability. It was published on April 23, 2019 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

How severe is CVE-2018-20820?

This vulnerability has a CVSS 3.0 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-20820?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-20820?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-20820 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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