Summary
Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.
This update upgrades Firefox to version 115.6.0 ESR.
Security Fix(es):
* Mozilla: Heap-buffer-overflow affecting WebGL <code>DrawElementsInstanced</code> method with Mesa VM driver (CVE-2023-6856)
* Mozilla: Memory safety bugs fixed in Firefox 121, Firefox ESR 115.6, and Thunderbird 115.6 (CVE-2023-6864)
* Mozilla: Potential exposure of uninitialized data in <code>EncryptingOutputStream</code> (CVE-2023-6865)
* Mozilla: Symlinks may resolve to smaller than expected buffers (CVE-2023-6857)
* Mozilla: Heap buffer overflow in <code>nsTextFragment</code> (CVE-2023-6858)
* Mozilla: Use-after-free in PR_GetIdentitiesLayer (CVE-2023-6859)
* Mozilla: Potential sandbox escape due to <code>VideoBridge</code> lack of texture validation (CVE-2023-6860)
* Mozilla: Heap buffer overflow affected <code>nsWindow::PickerOpen(void)</code> in headless mode (CVE-2023-6861)
* Mozilla: Use-after-free in <code>nsDNSService</code> (CVE-2023-6862)
* Mozilla: Clickjacking permission prompts using the popup transition (CVE-2023-6867)
* Mozilla: Undefined behavior in <code>ShutdownObserver()</code> (CVE-2023-6863)
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.
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| Rocky Linux · 8 | firefox | 0:115.6.0-1.el8_9 |
Vulnerabilities 11
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High 8.8
Firefox was susceptible to a heap buffer overflow in `nsTextFragment` due to insufficient OOM handling. This vulnerabil…
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Unscored —CVE-2023-6856 EPSS 21%
The WebGL `DrawElementsInstanced` method was susceptible to a heap buffer overflow when used on systems with the Mesa V…
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Unscored —
When resolving a symlink, a race may occur where the buffer passed to `readlink` may actually be smaller than necessary…
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Unscored —
A use-after-free condition affected TLS socket creation when under memory pressure. This vulnerability affects Firefox …
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Unscored —
The `VideoBridge` allowed any content process to use textures produced by remote decoders. This could be abused to esca…
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Unscored —
The `nsWindow::PickerOpen(void)` method was susceptible to a heap buffer overflow when running in headless mode. This v…
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Unscored —
A use-after-free was identified in the `nsDNSService::Init`. This issue appears to manifest rarely during start-up. Thi…
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Unscored —
The `ShutdownObserver()` was susceptible to potentially undefined behavior due to its reliance on a dynamic type that l…
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Unscored —
Memory safety bugs present in Firefox 120, Firefox ESR 115.5, and Thunderbird 115.5. Some of these bugs showed evidence…
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Unscored —
`EncryptingOutputStream` was susceptible to exposing uninitialized data. This issue could only be abused in order to wr…
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Unscored —
The timing of a button click causing a popup to disappear was approximately the same length as the anti-clickjacking de…
References
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2255360
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2255361
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2255362
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2255363
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2255364
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2255365
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2255366
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2255367
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2255368
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2255369
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2255370