Cross-site Scripting (XSS) Affecting firefox package, versions <73.0.1+build1-0ubuntu0.16.04.1


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
1.25% (87th percentile)

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  • Snyk IDSNYK-UBUNTU1604-FIREFOX-548559
  • published11 Feb 2020
  • disclosed2 Mar 2020

Introduced: 11 Feb 2020

CVE-2020-6798  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Ubuntu:16.04 firefox to version 73.0.1+build1-0ubuntu0.16.04.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

If a template tag was used in a select tag, the parser could be confused and allow JavaScript parsing and execution when it should not be allowed. A site that relied on the browser behaving correctly could suffer a cross-site scripting vulnerability as a result. In general, this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but is potentially a risk in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.

CVSS Scores

version 3.1