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OpenAdvisories
High RHSA-2023:4959 12 CVEs

Red Hat Security Advisory: firefox security update

Published Sep 16, 2024 · Updated Nov 22, 2025

Ecosystem: Red Hat

Fixed packages 3

ReleasePackageFixed in
Red Hat · RHEL 8.6 EUS rhel_eus:8.6::appstream firefox 0:102.15.0-1.el8_6
Red Hat · RHEL 8.6 EUS rhel_eus:8.6::appstream firefox-debuginfo 0:102.15.0-1.el8_6
Red Hat · RHEL 8.6 EUS rhel_eus:8.6::appstream firefox-debugsource 0:102.15.0-1.el8_6

Vulnerabilities 12

  • High 8.8
    CVE-2023-4585

    Memory safety bugs fixed in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2

    Memory safety bugs present in Firefox 116, Firefox ESR 115.1, and Thunderbird 115.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerabili…

    Mozilla Firefox Thunderbird Firefox ESR Browsers Debian Ubuntu Alpine
  • High 7.5
    CVE-2023-4583

    Browsing Context potentially not cleared when closing Private Window

    When checking if the Browsing Context had been discarded in `HttpBaseChannel`, if the load group was not available then it was assumed to have already been discarded which was not always the case for private channels after the private session had ended. This …

    Mozilla Firefox Thunderbird Firefox ESR Browsers Debian Ubuntu Alpine
  • Unscored —
    CVE-2023-4051

    Full screen notification obscured by file open dialog

    A website could have obscured the full screen notification by using the file open dialog. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 116, Firefox ESR < 115.2, and Thunderbird < 115.2.

    Mozilla Firefox Thunderbird Firefox ESR Browsers Debian Ubuntu Alpine
  • Unscored —
    CVE-2023-4053

    Full screen notification obscured by external program

    A website could have obscured the full screen notification by using a URL with a scheme handled by an external program, such as a mailto URL. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 116, Firefo…

    Mozilla Firefox Thunderbird Firefox ESR Browsers Debian Ubuntu Alpine
  • Unscored —
    CVE-2023-4573

    Memory corruption in IPC CanvasTranslator

    When receiving rendering data over IPC `mStream` could have been destroyed when initialized, which could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox < 117, Firefox ESR < 102.15, Firefox ESR < 115.2,…

    Mozilla Firefox Thunderbird Firefox ESR Browsers Debian Ubuntu Alpine
  • Unscored —
    CVE-2023-4574

    Memory corruption in IPC ColorPickerShownCallback

    When creating a callback over IPC for showing the Color Picker window, multiple of the same callbacks could have been created at a time and eventually all simultaneously destroyed as soon as one of the callbacks finished. This could have led to a use-after-fr…

    Mozilla Firefox Thunderbird Firefox ESR Browsers Debian Ubuntu Alpine
  • Unscored —
    CVE-2023-4575

    Memory corruption in IPC FilePickerShownCallback

    When creating a callback over IPC for showing the File Picker window, multiple of the same callbacks could have been created at a time and eventually all simultaneously destroyed as soon as one of the callbacks finished. This could have led to a use-after-fre…

    Mozilla Firefox Thunderbird Firefox ESR Browsers Debian Ubuntu Alpine
  • Unscored —
    CVE-2023-4577

    Memory corruption in JIT UpdateRegExpStatics

    When `UpdateRegExpStatics` attempted to access `initialStringHeap` it could already have been garbage collected prior to entering the function, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 117, Firefox ESR < 1…

    Mozilla Firefox Thunderbird Firefox ESR Browsers Debian Ubuntu Alpine
  • Unscored —
    CVE-2023-4578

    Error reporting methods in SpiderMonkey could have triggered an Out of Memory Exception

    When calling `JS::CheckRegExpSyntax` a Syntax Error could have been set which would end in calling `convertToRuntimeErrorAndClear`. A path in the function could attempt to allocate memory when none is available which would have caused a newly created Out of M…

    Mozilla Firefox Thunderbird Firefox ESR Browsers Debian Ubuntu Alpine
  • Unscored —
    CVE-2023-4580

    Push notifications saved to disk unencrypted

    Push notifications stored on disk in private browsing mode were not being encrypted potentially allowing the leak of sensitive information. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.

    Mozilla Firefox Thunderbird Firefox ESR Browsers Debian Ubuntu Alpine
  • Unscored —
    CVE-2023-4581

    XLL file extensions were downloadable without warnings

    Excel `.xll` add-in files did not have a blocklist entry in Firefox's executable blocklist which allowed them to be downloaded without any warning of their potential harm. This vulnerability affects Firefox < 117, Firefox ESR < 102.15, Firefox ESR < 115.2, Th…

    Mozilla Firefox Thunderbird Firefox ESR Browsers Debian Ubuntu Alpine
  • Unscored —
    CVE-2023-4584

    Memory safety bugs fixed in Firefox 117, Firefox ESR 102.15, Firefox ESR 115.2, Thunderbird 102.15, and Thunderbird 115.2

    Memory safety bugs present in Firefox 116, Firefox ESR 102.14, Firefox ESR 115.1, Thunderbird 102.14, and Thunderbird 115.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited…

    Mozilla Firefox Thunderbird Firefox ESR Browsers Debian Ubuntu Alpine

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2236071
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2236072
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2236073
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2236075
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2236076
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2236077
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2236078
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2236079
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2236080
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2236082
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2236084
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2236086
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_4959.json
  • report
    https://access.redhat.com/security/cve/CVE-2023-4051
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-4051
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-4051
  • article
    https://www.mozilla.org/en-US/security/advisories/mfsa2023-36/#CVE-2023-4051
  • report
    https://access.redhat.com/security/cve/CVE-2023-4053
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-4053
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-4053
  • article
    https://www.mozilla.org/en-US/security/advisories/mfsa2023-36/#CVE-2023-4053
  • report
    https://access.redhat.com/security/cve/CVE-2023-4573
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-4573
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-4573
  • article
    https://www.mozilla.org/en-US/security/advisories/mfsa2023-36/#CVE-2023-4573
  • report
    https://access.redhat.com/security/cve/CVE-2023-4574
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-4574
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-4574
  • article
    https://www.mozilla.org/en-US/security/advisories/mfsa2023-36/#CVE-2023-4574
  • report
    https://access.redhat.com/security/cve/CVE-2023-4575
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-4575
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-4575
  • article
    https://www.mozilla.org/en-US/security/advisories/mfsa2023-36/#CVE-2023-4575
  • report
    https://access.redhat.com/security/cve/CVE-2023-4577
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-4577
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-4577
  • article
    https://www.mozilla.org/en-US/security/advisories/mfsa2023-36/#CVE-2023-4577
  • report
    https://access.redhat.com/security/cve/CVE-2023-4578