CVE-2025-43529
Description
A flaw was found in webkitgtk where when processing a maliciously crafted web content a use-after-free type of weaknesses may be triggered leading to a remote code execution in the client machine.
Statement
This vulnerability is rated IMPORTANT for Red Hat products. A use-after-free flaw in webkitgtk, when processing maliciously crafted web content, can lead to remote code execution. Successful exploitation requires user interaction, where a victim must visit a malicious website.
WebKitGTK3 is not required by any package. Therefore, it can be removed without consequences or break of functionality. WebKitGTK4 is used in Red Hat Enterprise Linux 7 by the following packages: evolution-data-server, glade, gnome-boxes, gnome-initial-setup, gnome-online-accounts, gnome-shell, shotwell, sushi and yelp.
Mitigation
To mitigate this issue, avoid processing untrusted web content. Additionally, disabling the JavaScript JIT compiler can reduce the attack surface. For applications using WebKitGTK, set the environment variable `JavaScriptCoreUseJIT=0` before launching the application. This may impact performance for JavaScript-heavy web content.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 8.8 | N/A | 8.8 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | Required | N/A | Required |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | High | N/A | High |
| Integrity Impact | High | N/A | High |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory
If the expired pointer is used in a read operation, an attacker might be able to control data read in by the application.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
If the expired pointer references a memory location that is not accessible to the product, or points to a location that is "malformed" (such as NULL) or larger than expected by a read or write operation, then a crash may occur.
Integrity,Confidentiality,Availability
Technical Impact: Execute Unauthorized Code or Commands
If the expired pointer is used in a function call, or points to unexpected data in a write operation, then code execution may be possible.
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