CVE-2023-6857

The Mozilla Foundation Security Advisory describes this flaw as: When resolving a symlink, a race may occur where the buffer passed to readlink may actually be smaller than necessary. This bug only affects Firefox on Unix-based operating systems Android, Linux, MacOS. Windows is unaffected...

CVE-2023-6856

The Mozilla Foundation Security Advisory describes this flaw as: The WebGL DrawElementsInstanced method was susceptible to a heap buffer overflow when used on systems with the Mesa VM driver. This issue could allow an attacker to perform remote code execution and sandbox escape...

Mozilla: Using Selection API would copy contents into X11 primary selection.

The Mozilla Foundation Security Advisory describes this flaw as: When using X11, text selected by the page using the Selection API was erroneously copied into the primary selection, a temporary storage not unlike the clipboard. This bug only affects Firefox on X11. Other systems are unaffected...

Mozilla: Use-after-free in ReadableByteStreamQueueEntry::Buffer

The Mozilla Foundation Security Advisory describes this flaw as: Ownership mismanagement led to a use-after-free in ReadableByteStreams...

Mozilla: Incorrect parsing of relative URLs starting with "///"

The Mozilla Foundation Security Advisory describes this flaw as: Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part in the path could be used to override the specified host. This could contribute to security problems in web sites...

Mozilla: Incorrect parsing of relative URLs starting with "///"

The Mozilla Foundation Security Advisory describes this flaw as: Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part in the path could be used to override the specified host. This could contribute to security problems in web sites...

Mozilla: Incorrect parsing of relative URLs starting with "///"

The Mozilla Foundation Security Advisory describes this flaw as: Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part in the path could be used to override the specified host. This could contribute to security problems in web sites...

Mozilla: Out-of-bound memory access in WebGL2 blitFramebuffer

The Mozilla Foundation Security Advisory describes this flaw as: On some systems—depending on the graphics settings and drivers—it was possible to force an out-of-bounds read and leak memory data into the images created on the canvas element...

Mozilla: Clickjacking permission prompts using the fullscreen transition

The Mozilla Foundation Security Advisory describes this flaw as: The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on permission prompts. It was possible to use this fact to surprise users by luring them to click where the permission grant butto...

Mozilla: Clickjacking permission prompts using the fullscreen transition

The Mozilla Foundation Security Advisory describes this flaw as: The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on permission prompts. It was possible to use this fact to surprise users by luring them to click where the permission grant butto...

CVE-2023-6209

The Mozilla Foundation Security Advisory describes this flaw as: Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part in the path could be used to override the specified host. This could contribute to security problems in web sites...

CVE-2023-6208

The Mozilla Foundation Security Advisory describes this flaw as: When using X11, text selected by the page using the Selection API was erroneously copied into the primary selection, a temporary storage not unlike the clipboard. This bug only affects Firefox on X11. Other systems are unaffected...

CVE-2023-6207

The Mozilla Foundation Security Advisory describes this flaw as: Ownership mismanagement led to a use-after-free in ReadableByteStreams...

CVE-2023-6205

The Mozilla Foundation Security Advisory describes this flaw as: It was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash...

Mozilla: Address bar spoofing via bidirectional characters

The Mozilla Foundation Security Advisory describes this flaw as: An attacker could have created a malicious link using bidirectional characters to spoof the location in the address bar when visited...

Mozilla: Address bar spoofing via bidirectional characters

The Mozilla Foundation Security Advisory describes this flaw as: An attacker could have created a malicious link using bidirectional characters to spoof the location in the address bar when visited...

Mozilla: Queued up rendering could have allowed websites to clickjack

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes this flaw as follows: Certain browser prompts and dialogs could be activated or dismissed unintentionally by the user due to an insufficient activation delay...

CVE-2023-5730

The Mozilla Foundation Security Advisory describes this flaw as: Memory safety bugs present in Firefox 118, Firefox ESR 115.3, and Thunderbird 115.3. 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...

CVE-2023-5728

The Mozilla Foundation Security Advisory describes this flaw as: During garbage collection extra operations were performed on a object that should not be. This could have led to a potentially exploitable crash...

CVE-2023-5726

The Mozilla Foundation Security Advisory describes this flaw as: 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. Note: This issue only affected macOS operating systems. Other operating...