CVE-2023-4575 : What You Need to Know

This CVE record was published on September 11, 2023, by Mozilla. The vulnerability was reserved on August 29, 2023, and updated on September 13, 2023.

Understanding CVE-2023-4575

This vulnerability impacts Firefox, Firefox ESR, and Thunderbird applications and involves memory corruption in IPC FilePickerShownCallback.

What is CVE-2023-4575?

The vulnerability arises from the creation of multiple callbacks over IPC for displaying the File Picker window. This could lead to the simultaneous creation and destruction of multiple callbacks, resulting in a use-after-free issue that could cause a potential crash. It affects Firefox versions less than 117, Firefox ESR versions less than 102.15 and 115.2, as well as Thunderbird versions less than 102.15 and 115.2.

The Impact of CVE-2023-4575

Exploitation of this vulnerability could result in a potentially exploitable crash, posing a security risk to users of the affected Mozilla applications.

Technical Details of CVE-2023-4575

The technical details of this CVE include:

Vulnerability Description

The vulnerability allows for the creation of multiple callbacks over IPC for the File Picker window, leading to a use-after-free scenario and potential crashes.

Affected Systems and Versions

Firefox < 117
Firefox ESR < 102.15
Firefox ESR < 115.2
Thunderbird < 102.15
Thunderbird < 115.2

Exploitation Mechanism

By creating multiple callbacks over IPC, an attacker could trigger the use-after-free scenario and exploit the vulnerability, potentially causing a crash.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-4575, the following steps can be taken:

Immediate Steps to Take

Users are advised to update their Firefox and Thunderbird applications to the latest version to address the vulnerability and prevent potential exploitation.

Long-Term Security Practices

Maintaining up-to-date software and regularly applying security patches is essential to safeguard against known vulnerabilities like CVE-2023-4575.

Patching and Updates

Mozilla has released patches to address this vulnerability. Users should promptly install these patches or update their applications to the latest versions to mitigate the security risks posed by CVE-2023-4575.