RHSA-2020:2826

Vulnerability from csaf_redhat - Published: 2020-07-06 20:56 - Updated: 2026-11-07 05:22
Summary
Red Hat Security Advisory: firefox security update
Severity
Important
Notes
Topic: An update for firefox is now available for Red Hat Enterprise Linux 8.1 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 68.10.0 ESR. Security Fix(es): * Mozilla: Memory corruption due to missing sign-extension for ValueTags on ARM64 (CVE-2020-12417) * Mozilla: Information disclosure due to manipulated URL object (CVE-2020-12418) * Mozilla: Use-after-free in nsGlobalWindowInner (CVE-2020-12419) * Mozilla: Use-After-Free when trying to connect to a STUN server (CVE-2020-12420) * Mozilla: Add-On updates did not respect the same certificate trust rules as software updates (CVE-2020-12421) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2020-12417

The Mozilla Foundation Security Advisory describes this flaw as: Due to confusion about ValueTags on JavaScript Objects, an object may pass through the type barrier, resulting in memory corruption and a potentially exploitable crash.

8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Affected products
Product Identifier Version Remediation
Unresolved product id: AppStream-8.1.0.Z.EUS:firefox-0:68.10.0-1.el8_1.aarch64 —
Vendor Fix fix
Unresolved product id: AppStream-8.1.0.Z.EUS:firefox-0:68.10.0-1.el8_1.ppc64le —
Vendor Fix fix
Unresolved product id: AppStream-8.1.0.Z.EUS:firefox-0:68.10.0-1.el8_1.s390x —
Vendor Fix fix
Unresolved product id: AppStream-8.1.0.Z.EUS:firefox-0:68.10.0-1.el8_1.src —
Vendor Fix fix
Unresolved product id: AppStream-8.1.0.Z.EUS:firefox-0:68.10.0-1.el8_1.x86_64 —
Vendor Fix fix
Unresolved product id: AppStream-8.1.0.Z.EUS:firefox-debuginfo-0:68.10.0-1.el8_1.aarch64 —
Vendor Fix fix
Unresolved product id: AppStream-8.1.0.Z.EUS:firefox-debuginfo-0:68.10.0-1.el8_1.ppc64le —
Vendor Fix fix
Unresolved product id: AppStream-8.1.0.Z.EUS:firefox-debuginfo-0:68.10.0-1.el8_1.s390x —
Vendor Fix fix
Unresolved product id: AppStream-8.1.0.Z.EUS:firefox-debuginfo-0:68.10.0-1.el8_1.x86_64 —
Vendor Fix fix
Unresolved product id: AppStream-8.1.0.Z.EUS:firefox-debugsource-0:68.10.0-1.el8_1.aarch64 —
Vendor Fix fix
Unresolved product id: AppStream-8.1.0.Z.EUS:firefox-debugsource-0:68.10.0-1.el8_1.ppc64le —
Vendor Fix fix
Unresolved product id: AppStream-8.1.0.Z.EUS:firefox-debugsource-0:68.10.0-1.el8_1.s390x —
Vendor Fix fix
Unresolved product id: AppStream-8.1.0.Z.EUS:firefox-debugsource-0:68.10.0-1.el8_1.x86_64 —
Vendor Fix fix
Threats
Impact Important
CVE-2020-12418

The Mozilla Foundation Security Advisory describes this flaw as: Manipulating individual parts of a URL object could have caused an out-of-bounds read, leaking process memory to malicious JavaScript.

6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Affected products
Fixed 13 products, the same list as for CVE-2020-12417
Threats
Impact Important
CVE-2020-12419

The Mozilla Foundation Security Advisory describes this flaw as: When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free condition. This could have led to memory corruption and a potentially exploitable crash.

8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-416 - Use After Free
Affected products
Fixed 13 products, the same list as for CVE-2020-12417
Threats
Impact Important
CVE-2020-12420

The Mozilla Foundation Security Advisory describes this flaw as: When trying to connect to a STUN server, a race condition could have caused a use-after-free of a pointer, leading to memory corruption and a potentially exploitable crash.

8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-416 - Use After Free
Affected products
Fixed 13 products, the same list as for CVE-2020-12417
Threats
Impact Important
CVE-2020-12421

The Mozilla Foundation Security Advisory describes this flaw as: When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected (even if they were legitimately added by an administrator.) This could have caused add-ons to become out-of-date silently without notification to the user.

6.1 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-296 - Improper Following of a Certificate's Chain of Trust
Affected products
Fixed 13 products, the same list as for CVE-2020-12417
Threats
Impact Moderate
References
URL Category
https://access.redhat.com/errata/RHSA-2020:2826 self
https://access.redhat.com/security/updates/classi… external
https://bugzilla.redhat.com/show_bug.cgi?id=1853014 external
https://bugzilla.redhat.com/show_bug.cgi?id=1853015 external
https://bugzilla.redhat.com/show_bug.cgi?id=1853016 external
https://bugzilla.redhat.com/show_bug.cgi?id=1853017 external
https://bugzilla.redhat.com/show_bug.cgi?id=1853018 external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2020-12417 self
https://bugzilla.redhat.com/show_bug.cgi?id=1853014 external
https://www.cve.org/CVERecord?id=CVE-2020-12417 external
https://nvd.nist.gov/vuln/detail/CVE-2020-12417 external
https://www.mozilla.org/en-US/security/advisories… external
https://access.redhat.com/security/cve/CVE-2020-12418 self
https://bugzilla.redhat.com/show_bug.cgi?id=1853015 external
https://www.cve.org/CVERecord?id=CVE-2020-12418 external
https://nvd.nist.gov/vuln/detail/CVE-2020-12418 external
https://www.mozilla.org/en-US/security/advisories… external
https://access.redhat.com/security/cve/CVE-2020-12419 self
https://bugzilla.redhat.com/show_bug.cgi?id=1853016 external
https://www.cve.org/CVERecord?id=CVE-2020-12419 external
https://nvd.nist.gov/vuln/detail/CVE-2020-12419 external
https://www.mozilla.org/en-US/security/advisories… external
https://access.redhat.com/security/cve/CVE-2020-12420 self
https://bugzilla.redhat.com/show_bug.cgi?id=1853017 external
https://www.cve.org/CVERecord?id=CVE-2020-12420 external
https://nvd.nist.gov/vuln/detail/CVE-2020-12420 external
https://www.mozilla.org/en-US/security/advisories… external
https://access.redhat.com/security/cve/CVE-2020-12421 self
https://bugzilla.redhat.com/show_bug.cgi?id=1853018 external
https://www.cve.org/CVERecord?id=CVE-2020-12421 external
https://nvd.nist.gov/vuln/detail/CVE-2020-12421 external
https://www.mozilla.org/en-US/security/advisories… external
Acknowledgments
the Mozilla project
Deian Stefan
Cisco Talos Marcin 'Icewall' Noga
the Mozilla Project
worcester12345
Byron Campen
Chuck Harmston Robert Hardy
To clipboard 

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            "AppStream-8.1.0.Z.EUS:firefox-debuginfo-0:68.10.0-1.el8_1.ppc64le",
            "AppStream-8.1.0.Z.EUS:firefox-debuginfo-0:68.10.0-1.el8_1.s390x",
            "AppStream-8.1.0.Z.EUS:firefox-debuginfo-0:68.10.0-1.el8_1.x86_64",
            "AppStream-8.1.0.Z.EUS:firefox-debugsource-0:68.10.0-1.el8_1.aarch64",
            "AppStream-8.1.0.Z.EUS:firefox-debugsource-0:68.10.0-1.el8_1.ppc64le",
            "AppStream-8.1.0.Z.EUS:firefox-debugsource-0:68.10.0-1.el8_1.s390x",
            "AppStream-8.1.0.Z.EUS:firefox-debugsource-0:68.10.0-1.el8_1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "Mozilla: Add-On updates did not respect the same certificate trust rules as software updates"
    }
  ]
}



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Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.