Cross-site Scripting (XSS) Affecting firefox package, versions <0:78.3.0-1.0.1.el7_9


Severity

Recommended
high

Based on Oracle Linux security rating

    Threat Intelligence

    EPSS
    0.66% (80th percentile)

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  • Snyk ID SNYK-ORACLE7-FIREFOX-2564498
  • published 10 Apr 2022
  • disclosed 1 Oct 2020

How to fix?

Upgrade Oracle:7 firefox to version 0:78.3.0-1.0.1.el7_9 or higher.
This issue was patched in ELSA-2020-4080.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

Firefox sometimes ran the onload handler for SVG elements that the DOM sanitizer decided to remove, resulting in JavaScript being executed after pasting attacker-controlled data into a contenteditable element. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.

CVSS Scores

version 3.1
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NVD

6.1 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Changed
  • Confidentiality (C)
    Low
  • Integrity (I)
    Low
  • Availability (A)
    None
Expand this section

SUSE

6.1 medium