CVE-2023-5176

Memory safety bugs present in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2

Critical · published September 27, 2023

CVSS v3.1
9.8
EPSS
1%
Percentile
72.0
In the wild
Unconfirmed
What it is

🔥 Memory safety bugs lurking in Firefox 117 and Thunderbird 115.2 could let attackers execute arbitrary code — it's like having a hidden backdoor in your favorite café! ☕️ Think of it as a friendly barista who accidentally gives out the key to the private stockroom without realizing it. An attacker could waltz in, causing chaos with complete control over the system! The potential fallout is absolutely devastating. An attacker could exploit these memory corruption issues, gaining the ability to execute arbitrary code, steal sensitive information, or even take over the affected applications entirely. It's not just a minor inconvenience; it’s a serious risk to your data integrity and security!

Put simply

Think of it as a friendly barista who accidentally gives out the key to the private stockroom without realizing it. An attacker could waltz in, causing chaos with complete control over the system! This vulnerability stems from memory safety bugs in Firefox and Thunderbird, which could lead to memory corruption issues. While exploitation is not confirmed, the potential for arbitrary code execution exists, allowing attackers to hijack user sessions or manipulate application behavior.

What to do

The potential fallout is absolutely devastating. An attacker could exploit these memory corruption issues, gaining the ability to execute arbitrary code, steal sensitive information, or even take over the affected applications entirely. It's not just a minor inconvenience; it’s a serious risk to your data integrity and security! Update Firefox to version 118, Firefox ESR to version 115.3, and Thunderbird to version 115.3 immediately. It's crucial to stay up to date and reinforce your defenses by enabling security features. Don’t forget to check your extensions for compatibility! You've got this! By staying proactive and following these steps, you’re keeping your systems safe and sound. 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01388 · 72.0th percentile
Published
2023-09-27T14:13Z
EPSS history
Timeline
  • 27 SEP 14:13Z
    Memory safety bugs present in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2
    cvelistv5