Memory safety bugs present in Firefox 109. 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 vulnerability affects Firefox < 110.

An update of the mozjs package has been released.

The remote host is affected by the vulnerability described in GLSA-202305-36 (Mozilla Thunderbird: Multiple Vulnerabilities)

  - matrix-js-sdk is a Matrix messaging protocol Client-Server SDK for JavaScript. In versions prior to 24.0.0     events sent with special strings in key places can temporarily disrupt or impede the matrix-js-sdk from     functioning properly, potentially impacting the consumer's ability to process data safely. Note that the     matrix-js-sdk can appear to be operating normally but be excluding or corrupting runtime data presented to     the consumer. This vulnerability is distinct from GHSA-rfv9-x7hh-xc32 which covers a similar issue. The     issue has been patched in matrix-js-sdk 24.0.0 and users are advised to upgrade. There are no known     workarounds for this vulnerability. (CVE-2023-28427)

  - Mozilla: User Interface lockup with messages combining S/MIME and OpenPGP (CVE-2023-0616)

  - An attacker could construct a PKCS 12 cert bundle in such a way that could allow for arbitrary memory     writes via PKCS 12 Safe Bag attributes being mishandled.  (CVE-2023-0767)

  - Unexpected data returned from the Safe Browsing API could have led to memory corruption and a potentially     exploitable crash.  (CVE-2023-1945)

  - A double-free in libwebp could have led to memory corruption and a potentially exploitable crash.
    (CVE-2023-1999)

  - Mozilla: Content security policy leak in violation reports using iframes (CVE-2023-25728)

  - Permission prompts for opening external schemes were only shown for <code>ContentPrincipals</code>     resulting in extensions being able to open them without user interaction via     <code>ExpandedPrincipals</code>. This could lead to further malicious actions such as downloading files or     interacting with software already installed on the system.  (CVE-2023-25729)

  - A background script invoking <code>requestFullscreen</code> and then blocking the main thread could force     the browser into fullscreen mode indefinitely, resulting in potential user confusion or spoofing attacks.
    (CVE-2023-25730)

  - When encoding data from an <code>inputStream</code> in <code>xpcom</code> the size of the input being     encoded was not correctly calculated potentially leading to an out of bounds memory write.
    (CVE-2023-25732)

  - After downloading a Windows <code>.url</code> shortcut from the local filesystem, an attacker could supply     a remote path that would lead to unexpected network requests from the operating system.  This also had the     potential to leak NTLM credentials to the resource. This bug only affects Thunderbird on Windows. Other     operating systems are unaffected.  (CVE-2023-25734)

  - Cross-compartment wrappers wrapping a scripted proxy could have caused objects from other compartments to     be stored in the main compartment resulting in a use-after-free after unwrapping the proxy.
    (CVE-2023-25735)

  - An invalid downcast from <code>nsTextNode</code> to <code>SVGElement</code> could have lead to undefined     behavior.  (CVE-2023-25737)

  - Members of the <code>DEVMODEW</code> struct set by the printer device driver weren't being validated and     could have resulted in invalid values which in turn would cause the browser to attempt out of bounds     access to related variables. This bug only affects Thunderbird on Windows. Other operating systems are     unaffected.  (CVE-2023-25738)

  - Module load requests that failed were not being checked as to whether or not they were cancelled causing a     use-after-free in <code>ScriptLoadContext</code>.  (CVE-2023-25739)

  - After downloading a Windows <code>.scf</code> script from the local filesystem, an attacker could supply a     remote path that would lead to unexpected network requests from the operating system. This also had the     potential to leak NTLM credentials to the resource. This bug only affects Firefox for Windows. Other     operating systems are unaffected.  (CVE-2023-25740)

  - When dragging and dropping an image cross-origin, the image's size could potentially be leaked. This     behavior was shipped in 109 and caused web compatibility problems as well as this security concern, so the     behavior was disabled until further review.  (CVE-2023-25741)

  - When importing a SPKI RSA public key as ECDSA P-256, the key would be handled incorrectly causing the tab     to crash.  (CVE-2023-25742)

  - Mozilla: Fullscreen notification not shown in Firefox Focus (CVE-2023-25743)

  - Mozilla developers Kershaw Chang and the Mozilla Fuzzing Team reported memory safety bugs present in     Firefox 109 and Firefox ESR 102.7. 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.  (CVE-2023-25744)

  - Mozilla developers Timothy Nikkel, Gabriele Svelto, Jeff Muizelaar and the Mozilla Fuzzing Team reported     memory safety bugs present in Firefox 109. 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.
    (CVE-2023-25745)

  - Mozilla developers Philipp and Gabriele Svelto reported memory safety bugs present in Thunderbird 102.7.
    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.  (CVE-2023-25746)

  - Mozilla: Incorrect code generation during JIT compilation (CVE-2023-25751)

  - Mozilla: Potential out-of-bounds when accessing throttled streams (CVE-2023-25752)

  - Mozilla: Invalid downcast in Worklets (CVE-2023-28162)

  - When downloading files through the Save As dialog on Windows with suggested filenames containing     environment variable names, Windows would have resolved those in the context of the current user.  This     bug only affects Firefox on Windows. Other versions of Firefox are unaffected.  (CVE-2023-28163)

  - Mozilla: URL being dragged from a removed cross-origin iframe into the same tab triggered navigation     (CVE-2023-28164)

  - Mozilla: Memory safety bugs fixed in Firefox 111 and Firefox ESR 102.9 (CVE-2023-28176)

  - A website could have obscured the fullscreen notification by using a combination of     <code>window.open</code>, fullscreen requests, <code>window.name</code> assignments, and     <code>setInterval</code> calls. This could have led to user confusion and possible spoofing attacks.
    (CVE-2023-29533)

  - Following a Garbage Collector compaction, weak maps may have been accessed before they were correctly     traced. This resulted in memory corruption and a potentially exploitable crash.  (CVE-2023-29535)

  - An attacker could cause the memory manager to incorrectly free a pointer that addresses attacker-     controlled memory, resulting in an assertion, memory corruption, or a potentially exploitable crash.
    (CVE-2023-29536)

  - When handling the filename directive in the Content-Disposition header, the filename would be truncated if     the filename contained a NULL character. This could have led to reflected file download attacks     potentially tricking users to install malware.  (CVE-2023-29539)

  - Thunderbird did not properly handle downloads of files ending in <code>.desktop</code>, which can be     interpreted to run attacker-controlled commands.  This bug only affects Thunderbird for Linux on certain     Distributions. Other operating systems are unaffected, and Mozilla is unable to enumerate all affected     Linux Distributions.  (CVE-2023-29541)

  - A wrong lowering instruction in the ARM64 Ion compiler resulted in a wrong optimization result.
    (CVE-2023-29548)

  - Mozilla developers Andrew Osmond, Sebastian Hengst, Andrew McCreight, and the Mozilla Fuzzing Team     reported memory safety bugs present in Thunderbird 102.9. 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.  (CVE-2023-29550)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5880-1 advisory.

    Christian Holler discovered that Firefox did not properly manage memory when using PKCS 12 Safe Bag     attributes. An attacker could construct a PKCS 12 cert bundle in such a way that could allow for arbitrary     memory writes. (CVE-2023-0767)

    Johan Carlsson discovered that Firefox did not properly manage child iframe's unredacted URI when using     Content-Security-Policy-Report-Only header. An attacker could potentially exploits this to obtain     sensitive information. (CVE-2023-25728)

    Vitor Torres discovered that Firefox did not properly manage permissions of extensions interaction via     ExpandedPrincipals. An attacker could potentially exploits this issue to download malicious files or     execute arbitrary code. (CVE-2023-25729)

    Irvan Kurniawan discovered that Firefox did not properly validate background script invoking     requestFullscreen. An attacker could potentially exploit this issue to perform spoofing attacks.
    (CVE-2023-25730)

    Ronald Crane discovered that Firefox did not properly manage memory when using EncodeInputStream in xpcom.
    An attacker could potentially exploits this issue to cause a denial of service. (CVE-2023-25732)

    Samuel Grob discovered that Firefox did not properly manage memory when using wrappers wrapping a scripted     proxy. An attacker could potentially exploits this issue to cause a denial of service. (CVE-2023-25735)

    Holger Fuhrmannek discovered that Firefox did not properly manage memory when using Module load requests.
    An attacker could potentially exploits this issue to cause a denial of service. (CVE-2023-25739)

    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-2023-25731, CVE-2023-25733,     CVE-2023-25736, CVE-2023-25737, CVE-2023-25741, CVE-2023-25742, CVE-2023-25744, CVE-2023-25745)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Firefox installed on the remote macOS or Mac OS X host is prior to 110.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2023-05 advisory.

  - The <code>Content-Security-Policy-Report-Only</code> header could allow an attacker to leak a child     iframe's unredacted URI when interaction with that iframe triggers a redirect. (CVE-2023-25728)

  - A background script invoking <code>requestFullscreen</code> and then blocking the main thread could force     the browser into fullscreen mode indefinitely, resulting in potential user confusion or spoofing attacks.
    (CVE-2023-25730)

  - A lack of in app notification for entering fullscreen mode could have lead to a malicious website spoofing     browser chrome. This bug only affects Firefox Focus. Other versions of Firefox are unaffected.
    (CVE-2023-25743)

  - An attacker could construct a PKCS 12 cert bundle in such a way that could allow for arbitrary memory     writes via PKCS 12 Safe Bag attributes being mishandled. (CVE-2023-0767)

  - Cross-compartment wrappers wrapping a scripted proxy could have caused objects from other compartments to     be stored in the main compartment resulting in a use-after-free after unwrapping the proxy.
    (CVE-2023-25735)

  - An invalid downcast from <code>nsTextNode</code> to <code>SVGElement</code> could have lead to undefined     behavior. (CVE-2023-25737)

  - Members of the <code>DEVMODEW</code> struct set by the printer device driver weren't being validated and     could have resulted in invalid values which in turn would cause the browser to attempt out of bounds     access to related variables. This bug only affects Firefox on Windows. Other operating systems are     unaffected. (CVE-2023-25738)

  - Module load requests that failed were not being checked as to whether or not they were cancelled causing a     use-after-free in <code>ScriptLoadContext</code>. (CVE-2023-25739)

  - Permission prompts for opening external schemes were only shown for <code>ContentPrincipals</code>     resulting in extensions being able to open them without user interaction via     <code>ExpandedPrincipals</code>. This could lead to further malicious actions such as downloading files or     interacting with software already installed on the system. (CVE-2023-25729)

  - When encoding data from an <code>inputStream</code> in <code>xpcom</code> the size of the input being     encoded was not correctly calculated potentially leading to an out of bounds memory write.
    (CVE-2023-25732)

  - After downloading a Windows <code>.url</code> shortcut from the local filesystem, an attacker could supply     a remote path that would lead to unexpected network requests from the operating system.  This also had the     potential to leak NTLM credentials to the resource. This bug only affects Firefox on Windows. Other     operating systems are unaffected. (CVE-2023-25734)

  - After downloading a Windows <code>.scf</code> script from the local filesystem, an attacker could supply a     remote path that would lead to unexpected network requests from the operating system. This also had the     potential to leak NTLM credentials to the resource. This bug only affects Firefox for Windows. Other     operating systems are unaffected. (CVE-2023-25740)

  - Due to URL previews in the network panel of developer tools improperly storing URLs, query parameters     could potentially be used to overwrite global objects in privileged code. (CVE-2023-25731)

  - The return value from <code>gfx::SourceSurfaceSkia::Map()</code> wasn't being verified which could have     potentially lead to a null pointer dereference. (CVE-2023-25733)

  - An invalid downcast from <code>nsHTMLDocument</code> to <code>nsIContent</code> could have lead to     undefined behavior. (CVE-2023-25736)

  - When dragging and dropping an image cross-origin, the image's size could potentially be leaked. This     behavior was shipped in 109 and caused web compatibility problems as well as this security concern, so the     behavior was disabled until further review. (CVE-2023-25741)

  - When importing a SPKI RSA public key as ECDSA P-256, the key would be handled incorrectly causing the tab     to crash. (CVE-2023-25742)

  - Mozilla developers Kershaw Chang and the Mozilla Fuzzing Team reported memory safety bugs present in     Firefox 109 and Firefox ESR 102.7. 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. (CVE-2023-25744)

  - Mozilla developers Timothy Nikkel, Gabriele Svelto, Jeff Muizelaar and the Mozilla Fuzzing Team reported     memory safety bugs present in Firefox 109. 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.
    (CVE-2023-25745)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Firefox installed on the remote Windows host is prior to 110.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2023-05 advisory.

  - The <code>Content-Security-Policy-Report-Only</code> header could allow an attacker to leak a child     iframe's unredacted URI when interaction with that iframe triggers a redirect. (CVE-2023-25728)

  - A background script invoking <code>requestFullscreen</code> and then blocking the main thread could force     the browser into fullscreen mode indefinitely, resulting in potential user confusion or spoofing attacks.
    (CVE-2023-25730)

  - A lack of in app notification for entering fullscreen mode could have lead to a malicious website spoofing     browser chrome. This bug only affects Firefox Focus. Other versions of Firefox are unaffected.
    (CVE-2023-25743)

  - An attacker could construct a PKCS 12 cert bundle in such a way that could allow for arbitrary memory     writes via PKCS 12 Safe Bag attributes being mishandled. (CVE-2023-0767)

  - Cross-compartment wrappers wrapping a scripted proxy could have caused objects from other compartments to     be stored in the main compartment resulting in a use-after-free after unwrapping the proxy.
    (CVE-2023-25735)

  - An invalid downcast from <code>nsTextNode</code> to <code>SVGElement</code> could have lead to undefined     behavior. (CVE-2023-25737)

  - Members of the <code>DEVMODEW</code> struct set by the printer device driver weren't being validated and     could have resulted in invalid values which in turn would cause the browser to attempt out of bounds     access to related variables. This bug only affects Firefox on Windows. Other operating systems are     unaffected. (CVE-2023-25738)

  - Module load requests that failed were not being checked as to whether or not they were cancelled causing a     use-after-free in <code>ScriptLoadContext</code>. (CVE-2023-25739)

  - Permission prompts for opening external schemes were only shown for <code>ContentPrincipals</code>     resulting in extensions being able to open them without user interaction via     <code>ExpandedPrincipals</code>. This could lead to further malicious actions such as downloading files or     interacting with software already installed on the system. (CVE-2023-25729)

  - When encoding data from an <code>inputStream</code> in <code>xpcom</code> the size of the input being     encoded was not correctly calculated potentially leading to an out of bounds memory write.
    (CVE-2023-25732)

  - After downloading a Windows <code>.url</code> shortcut from the local filesystem, an attacker could supply     a remote path that would lead to unexpected network requests from the operating system.  This also had the     potential to leak NTLM credentials to the resource. This bug only affects Firefox on Windows. Other     operating systems are unaffected. (CVE-2023-25734)

  - After downloading a Windows <code>.scf</code> script from the local filesystem, an attacker could supply a     remote path that would lead to unexpected network requests from the operating system. This also had the     potential to leak NTLM credentials to the resource. This bug only affects Firefox for Windows. Other     operating systems are unaffected. (CVE-2023-25740)

  - Due to URL previews in the network panel of developer tools improperly storing URLs, query parameters     could potentially be used to overwrite global objects in privileged code. (CVE-2023-25731)

  - The return value from <code>gfx::SourceSurfaceSkia::Map()</code> wasn't being verified which could have     potentially lead to a null pointer dereference. (CVE-2023-25733)

  - An invalid downcast from <code>nsHTMLDocument</code> to <code>nsIContent</code> could have lead to     undefined behavior. (CVE-2023-25736)

  - When dragging and dropping an image cross-origin, the image's size could potentially be leaked. This     behavior was shipped in 109 and caused web compatibility problems as well as this security concern, so the     behavior was disabled until further review. (CVE-2023-25741)

  - When importing a SPKI RSA public key as ECDSA P-256, the key would be handled incorrectly causing the tab     to crash. (CVE-2023-25742)

  - Mozilla developers Kershaw Chang and the Mozilla Fuzzing Team reported memory safety bugs present in     Firefox 109 and Firefox ESR 102.7. 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. (CVE-2023-25744)

  - Mozilla developers Timothy Nikkel, Gabriele Svelto, Jeff Muizelaar and the Mozilla Fuzzing Team reported     memory safety bugs present in Firefox 109. 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.
    (CVE-2023-25745)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
204437	Photon OS 5.0: Mozjs PHSA-2023-5.0-0035	Nessus	PhotonOS Local Security Checks	critical
176468	GLSA-202305-36 : Mozilla Thunderbird: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	high
171637	Ubuntu 18.04 LTS / 20.04 LTS : Firefox vulnerabilities (USN-5880-1)	Nessus	Ubuntu Local Security Checks	critical
171455	Mozilla Firefox < 110.0	Nessus	MacOS X Local Security Checks	critical
171454	Mozilla Firefox < 110.0	Nessus	Windows	critical

Detections

Analytics

CVE-2023-25745

high

Tenable Plugins

critical

high

critical

critical

critical