Summary
Multiple security issues were discovered in Firefox. If a user were
tricked into opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, obtain sensitive
information across domains, or execute arbitrary code.(CVE-2023-6865,
CVE-2023-6857, CVE-2023-6858, CVE-2023-6859, CVE-2023-6866, CVE-2023-6867,
CVE-2023-6861, CVE-2023-6869, CVE-2023-6871, CVE-2023-6872, CVE-2023-6863,
CVE-2023-6864, CVE-2023-6873)
DoHyun Lee discovered that Firefox did not properly manage memory when used
on systems with the Mesa VM driver. An attacker could potentially exploit
this issue to execute arbitrary code. (CVE-2023-6856)
George Pantela and Hubert Kario discovered that Firefox using multiple NSS
NIST curves which were susceptible to a side-channel attack known as
"Minerva". An attacker could potentially exploit this issue to obtain
sensitive information. (CVE-2023-6135)
Andrew Osmond discovered that Firefox did not properly validate the textures
produced by remote decoders. An attacker could potentially exploit this
issue to escape the sandbox. (CVE-2023-6860)
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 20.04 LTS 20.04:LTS | firefox | 121.0+build1-0ubuntu0.20.04.1 |
Vulnerabilities 16
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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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High 8.8
TypedArrays can be fallible and lacked proper exception handling. This could lead to abuse in other APIs which expect T…
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Medium 6.5
A `<dialog>` element could have been manipulated to paint content outside of a sandboxed iframe. This could allow un…
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Unscored —
Multiple NSS NIST curves were susceptible to a side-channel attack known as "Minerva". This attack could potentially al…
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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 —
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…
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Unscored —
Under certain conditions, Firefox did not display a warning when a user attempted to navigate to a new protocol handler…
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Unscored —
Browser tab titles were being leaked by GNOME to system logs. This could potentially expose the browsing habits of user…
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Unscored —
Memory safety bugs present in Firefox 120. Some of these bugs showed evidence of memory corruption and we presume that …
References
-
report
https://ubuntu.com/security/CVE-2023-6135
-
report
https://ubuntu.com/security/CVE-2023-6856
-
report
https://ubuntu.com/security/CVE-2023-6857
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report
https://ubuntu.com/security/CVE-2023-6858
-
report
https://ubuntu.com/security/CVE-2023-6859
-
report
https://ubuntu.com/security/CVE-2023-6860
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report
https://ubuntu.com/security/CVE-2023-6861
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report
https://ubuntu.com/security/CVE-2023-6863
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report
https://ubuntu.com/security/CVE-2023-6864
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report
https://ubuntu.com/security/CVE-2023-6865
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report
https://ubuntu.com/security/CVE-2023-6866
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report
https://ubuntu.com/security/CVE-2023-6867
-
report
https://ubuntu.com/security/CVE-2023-6869
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report
https://ubuntu.com/security/CVE-2023-6871
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report
https://ubuntu.com/security/CVE-2023-6872
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report
https://ubuntu.com/security/CVE-2023-6873