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CVE-2021-23969 Affecting firefox package, versions <0:78.8.0-1.0.1.el7_9

Severity

 Recommended
critical

Based on Oracle Linux security rating

    Threat Intelligence

    EPSS
    0.67% (81st percentile)

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  • Snyk ID SNYK-ORACLE7-FIREFOX-2578024
  • published 10 Apr 2022
  • disclosed 26 Feb 2021
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Introduced: 26 Feb 2021

CVE-2021-23969 Open this link in a new tab

How to fix?

Upgrade Oracle:7 firefox to version 0:78.8.0-1.0.1.el7_9 or higher.
This issue was patched in ELSA-2021-0656.

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.

As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If that’s not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage." Under certain types of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was fixed to be the redirect destination's origin. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.

CVSS Scores

version 3.1
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NVD

4.3 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    None
  • Availability (A)
    None
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Red Hat

4.3 medium
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SUSE

4.3 medium