CVE-2018-21054 : Exploit Details and Defense Strategies

A vulnerability has been identified on certain Samsung mobile devices running M(6.0), N(7.x), and O(8.x), excluding exynos9610/9820 on all Platforms, M(6.0) excluding MSM8909 SC77xx/9830 exynos3470/5420, N(7.0) excluding MSM8939, N(7.1) excluding MSM8996 SDM6xx/M6737T software versions. This vulnerability involves an integer underflow leading to a buffer overflow in the eCryptFS system. It is assigned the Samsung ID SVE-2017-11857 (September 2018).

Understanding CVE-2018-21054

This CVE affects certain Samsung mobile devices due to an integer underflow leading to a buffer overflow in the eCryptFS system.

What is CVE-2018-21054?

CVE-2018-21054 is a vulnerability found in Samsung mobile devices running specific software versions, resulting in a buffer overflow due to an integer underflow in the eCryptFS system.

The Impact of CVE-2018-21054

The vulnerability can potentially allow attackers to execute arbitrary code or cause a denial of service on affected Samsung mobile devices.

Technical Details of CVE-2018-21054

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability involves an integer underflow leading to a buffer overflow in the eCryptFS system on certain Samsung mobile devices.

Affected Systems and Versions

Samsung mobile devices running M(6.0), N(7.x), and O(8.x)
Excludes exynos9610/9820 on all Platforms, M(6.0) excluding MSM8909 SC77xx/9830 exynos3470/5420, N(7.0) excluding MSM8939, N(7.1) excluding MSM8996 SDM6xx/M6737T software versions.

Exploitation Mechanism

The vulnerability can be exploited by attackers to trigger a buffer overflow through the eCryptFS system on the affected Samsung mobile devices.

Mitigation and Prevention

Protecting your devices from CVE-2018-21054 is crucial to maintaining security.

Immediate Steps to Take

Apply security patches provided by Samsung promptly.
Regularly update your Samsung mobile device to the latest software version.
Avoid downloading apps from untrusted sources.

Long-Term Security Practices

Implement strong device encryption to protect sensitive data.
Use reputable mobile security solutions to detect and prevent potential threats.

Patching and Updates

Ensure that your Samsung mobile device receives regular security updates and patches to mitigate the risk of CVE-2018-21054.