Apple Safari Web Content memory corruption

Summaryinfo

A vulnerability identified as critical has been detected in Apple Safari. This issue affects some unknown processing of the component Web Content Handler. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2025-24264. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Apple Safari (affected version not known). This issue affects some unknown functionality of the component Web Content Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. The summary by CVE is:

The issue was addressed with improved memory handling. This issue is fixed in visionOS 2.4, tvOS 18.4, iPadOS 17.7.6, iOS 18.4 and iPadOS 18.4, macOS Sequoia 15.4, Safari 18.4. Processing maliciously crafted web content may lead to an unexpected Safari crash.

It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2025-24264 since 01/17/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 04/11/2025).

The vulnerability scanner Nessus provides a plugin with the ID 234140 (Debian dsa-5899 : gir1.2-javascriptcoregtk-4.0 - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (234140). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Web Browser

Vendor

• Apple

Name

• Safari

License

• commercial

Website

• Vendor: https://www.apple.com/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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