A Critical Memory Out-of-Bounds Write Vulnerability in Samsung Galaxy S23/S24 Series: CVE-2024-49415

A Critical Memory Out-of-Bounds Write Vulnerability in Samsung Galaxy S23/S24 Series: CVE-2024-49415Google's Project Zero team recently released a security advisory disclosing a high-risk memory out-of-bounds write (OBW) vulnerability, CVE-2024-49415, affecting international versions of the Samsung Galaxy S23 and S24 series. The vulnerability resides in the Monkey's Audio (APE) audio decoder component, libsaped

A Critical Memory Out-of-Bounds Write Vulnerability in Samsung Galaxy S23/S24 Series: CVE-2024-49415

Google's Project Zero team recently released a security advisory disclosing a high-risk memory out-of-bounds write (OBW) vulnerability, CVE-2024-49415, affecting international versions of the Samsung Galaxy S23 and S24 series. The vulnerability resides in the Monkey's Audio (APE) audio decoder component, libsaped.so, and allows for remote code execution (RCE), posing a significant threat.

Project Zero's research revealed the vulnerability exists on international Galaxy S23 and S24 devices with the pre-installed Google Messages app and RCS enabled. Attackers can trigger the vulnerability by sending a specially crafted audio file to the target phone's Google Messages app. This isn't a typical audio file; it's a maliciously constructed APE file designed to exceed the memory boundaries of the libsaped.so component, resulting in the out-of-bounds write.

Upon processing the malicious APE file, libsaped.so attempts to write to memory outside its allocated space, potentially causing a crash and providing an opportunity for arbitrary code execution. This allows attackers to remotely control the affected phone, steal user data, install malware, and potentially take complete control of the device. The possibility of RCE makes this a critically dangerous vulnerability.

Importantly, this vulnerability requires no user interaction. Attackers don't need to trick users into clicking links or opening malicious attachments; sending the malicious audio file is sufficient. This significantly lowers the barrier to exploitation. Attackers could send the malicious file via SMS, social media, or other messaging apps.

Project Zero discovered the vulnerability earlier this year and promptly reported it to Samsung. Samsung investigated and remediated the issue, releasing a fix in the December 2024 SMR security update (SMR Dec-2024 Release 1).

While the CVSS score is 8.1 (high severity), Samsung assessed the vulnerability as "critical," a higher rating than the CVSS score suggests, likely due to the zero-click exploitation potential. This underscores the severity and potential impact.

Samsung has released an update containing the fix. All users of international Galaxy S23 and S24 phones are urged to update their devices immediately to the latest software version to ensure their security. Software updates are the most effective preventative measure.

This vulnerability highlights the critical importance of mobile device security. Mobile devices are integral to modern life, storing vast amounts of personal and sensitive data. Device manufacturers and users must prioritize mobile security and take proactive steps to protect devices and data.

Project Zero's proactive work is commendable. Their timely discovery and reporting helped Samsung quickly address the vulnerability, safeguarding users. Their work serves as a reminder that software vulnerabilities are ubiquitous, and continuous security testing and prompt updates are crucial.

Users should keep their software updated, avoid downloading and installing apps from untrusted sources, and maintain a high level of security awareness. Caution and skepticism when dealing with suspicious messages or attachments are also vital.

In conclusion, CVE-2024-49415 underscores the critical need for mobile security vigilance. Prompt software updates and heightened security awareness are crucial for protecting personal information. This incident should encourage manufacturers and users to work together to create a more secure mobile internet environment. Advanced security technologies and rigorous security review processes will be key to mitigating future vulnerabilities. Only through continuous effort can we better protect the digital world.