CVE-2018-5105 Security feature bypass in Firefox

What is CVE-2018-5105?

CVE-2018-5105 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 11 Jun 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

WebExtensions can bypass user prompts to first save and then open an arbitrarily downloaded file. This can result in an executable file running with local user privileges without explicit user consent. This vulnerability affects Firefox < 58.

Which versions are affected by CVE-2018-5105?

It affects 2 products.

Products include Canonical Ubuntu Linux, Mozilla Firefox.

How do I fix CVE-2018-5105?

Upgrade to a fixed version.

Is CVE-2018-5105 being exploited?

There is no known exploitation of CVE-2018-5105 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-fq4p-86v9-5w3x, UBUNTU-CVE-2018-5105.