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-2023-4573,
CVE-2023-4574, CVE-2023-4575, CVE-2023-4578, CVE-2023-4581, CVE-2023-4583,
CVE-2023-4584, CVE-2023-4585)
Lukas Bernhard discovered that Firefox did not properly manage memory when
the "UpdateRegExpStatics" attempted to access "initialStringHeap". An
attacker could potentially exploit this issue to cause a denial of service.
(CVE-2023-4577)
Malte Jürgens discovered that Firefox did not properly handle search
queries if the search query itself was a well formed URL. An attacker could
potentially exploit this issue to perform spoofing attacks. (CVE-2023-4579)
Harveer Singh discovered that Firefox did not properly handle push
notifications stored on disk in private browsing mode. An attacker could
potentially exploits this issue to access sensitive information.
(CVE-2023-4580)
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 20.04 LTS 20.04:LTS | firefox | 117.0+build2-0ubuntu0.20.04.1 |
Vulnerabilities 11
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High 8.8
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…
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High 7.5
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 …
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Unscored —
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,…
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Unscored —
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…
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Unscored —
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…
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Unscored —
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…
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Unscored —
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…
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Unscored —
Persisted search terms were formatted as URLs
Search queries in the default search engine could appear to have been the currently navigated URL if the search query itself was a well formed URL. This could have led to a site spoofing another if it had been maliciously set as the default search engine. Thi…
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Unscored —
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.
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Unscored —
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…
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Unscored —
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…
References
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report
https://ubuntu.com/security/CVE-2023-4573
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report
https://ubuntu.com/security/CVE-2023-4574
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report
https://ubuntu.com/security/CVE-2023-4575
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report
https://ubuntu.com/security/CVE-2023-4577
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report
https://ubuntu.com/security/CVE-2023-4578
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report
https://ubuntu.com/security/CVE-2023-4579
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report
https://ubuntu.com/security/CVE-2023-4580
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report
https://ubuntu.com/security/CVE-2023-4581
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report
https://ubuntu.com/security/CVE-2023-4583
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report
https://ubuntu.com/security/CVE-2023-4584
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report
https://ubuntu.com/security/CVE-2023-4585