Headline
CVE-2023-5176: Security Vulnerabilities fixed in Firefox 118
Memory safety bugs present in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2. 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 < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.
Mozilla Foundation Security Advisory 2023-41
Announced
September 26, 2023
Impact
high
Products
Firefox
Fixed in
- Firefox 118
#CVE-2023-5168: Out-of-bounds write in FilterNodeD2D1
Reporter
sonakkbi
Impact
high
Description
A compromised content process could have provided malicious data to FilterNodeD2D1 resulting in an out-of-bounds write, leading to a potentially exploitable crash in a privileged process.
References
- Bug 1846683
#CVE-2023-5169: Out-of-bounds write in PathOps
Reporter
sonakkbi
Impact
high
Description
A compromised content process could have provided malicious data in a PathRecording resulting in an out-of-bounds write, leading to a potentially exploitable crash in a privileged process.
References
- Bug 1846685
#CVE-2023-5170: Memory leak from a privileged process
Reporter
sonakkbi
Impact
high
Description
In canvas rendering, a compromised content process could have caused a surface to change unexpectedly, leading to a memory leak of a privileged process. This memory leak could be used to effect a sandbox escape if the correct data was leaked.
References
- Bug 1846686
#CVE-2023-5171: Use-after-free in Ion Compiler
Reporter
Lukas Bernhard
Impact
high
Description
During Ion compilation, a Garbage Collection could have resulted in a use-after-free condition, allowing an attacker to write two NUL bytes, and cause a potentially exploitable crash.
References
- Bug 1851599
#CVE-2023-5172: Memory Corruption in Ion Hints
Reporter
Mozilla Fuzzing Team
Impact
high
Description
A hashtable in the Ion Engine could have been mutated while there was a live interior reference, leading to a potential use-after-free and exploitable crash.
References
- Bug 1852218
#CVE-2023-5173: Out-of-bounds write in HTTP Alternate Services
Reporter
Ronald Crane
Impact
moderate
Description
In a non-standard configuration of Firefox, an integer overflow could have occurred based on network traffic (possibly under influence of a local unprivileged webpage), leading to an out-of-bounds write to privileged process memory.
This bug only affects Firefox if a non-standard preference allowing non-HTTPS Alternate Services (network.http.altsvc.oe) is enabled.
References
- Bug 1823172
#CVE-2023-5174: Double-free in process spawning on Windows
Reporter
Ronald Crane
Impact
moderate
Description
If Windows failed to duplicate a handle during process creation, the sandbox code may have inadvertently freed a pointer twice, resulting in a use-after-free and a potentially exploitable crash.
This bug only affects Firefox on Windows when run in non-standard configurations (such as using runas). Other operating systems are unaffected.
References
- Bug 1848454
#CVE-2023-5175: Use-after-free of ImageBitmap during process shutdown
Reporter
Yangkang of 360 ATA Team
Impact
low
Description
During process shutdown, it was possible that an ImageBitmap was created that would later be used after being freed from a different codepath, leading to a potentially exploitable crash.
References
- Bug 1849704
#CVE-2023-5176: Memory safety bugs fixed in Firefox 118, Firefox ESR 115.3, and Thunderbird 115.3
Reporter
Chris Peterson, Andrew McCreight, André Bargull, Nika Layzell and the Mozilla Fuzzing Team
Impact
high
Description
Memory safety bugs present in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2. 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.
References
- Memory safety bugs fixed in Firefox 118, Firefox ESR 115.3, and Thunderbird 115.3
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A compromised content process could have provided malicious data to `FilterNodeD2D1` resulting in an out-of-bounds write, leading to a potentially exploitable crash in a privileged process. This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.
During Ion compilation, a Garbage Collection could have resulted in a use-after-free condition, allowing an attacker to write two NUL bytes, and cause a potentially exploitable crash. This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.