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Google Migrating Android to Reminiscence-Secure Programming Languages

By Ionut Arghire on December 02, 2022

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Google is seeing a major lower in reminiscence questions of safety in Android because of the progressive migration to memory-safe programming languages, similar to Rust.

Between 2019 and 2022, the annual variety of reported reminiscence questions of safety in Android has dropped from 223 to 85, attributable to a rise within the quantity of memory-safe code coming into the cell platform, and the development is anticipated to proceed.

Reminiscence security bugs, Google notes, are usually probably the most extreme sort of vulnerabilities. In 2022, they accounted for 86% of the critical-severity flaws in Android and for 89% of the remotely exploitable points.

“Over the previous few years, reminiscence security vulnerabilities have accounted for 78% of confirmed exploited ‘in-the-wild’ vulnerabilities on Android units,” the web big explains.

The corporate additionally factors out that the lower in extreme vulnerabilities has led to a rise in lower-impact points, similar to denial-of-service (DoS) flaws.

With a lot of the new code added to Android 13 being written in a memory-safe language, reminiscence questions of safety now not symbolize nearly all of vulnerabilities within the working system, Google says.

“Whereas correlation doesn’t essentially imply causation, it’s attention-grabbing to notice that the p.c of vulnerabilities attributable to reminiscence questions of safety appears to correlate relatively carefully with the event language that’s used for brand new code,” Google notes.

Help for Rust was launched in Android 12, with the aim of shifting improvement to a memory-safe programming language relatively than changing current C/C++ code to Rust.

“In Android 13, about 21% of all new native code (C/C++/Rust) is in Rust. Up to now, there have been zero reminiscence security vulnerabilities found in Android’s Rust code,” Google says.

The web big has additionally invested in enhancing the reminiscence security of C/C++ and says it has seen only a few reminiscence questions of safety in Java, which makes use of the Java Native Interface (JNI) interface programming framework to entry low-level sources. Many of the APIs in Android are carried out in Java.

The aim is to make use of Rust wherever the place native code is required, together with kernel (attributable to assist for Rust in Linux 6.1).

“Utilizing Rust in Android permits us to optimize each safety and system well being with fewer compromises” to efficiency and safety, Google says.

“As Android migrates away from C/C++ to Java/Kotlin/Rust, we count on the variety of reminiscence security vulnerabilities to proceed to fall,” the web big continues.

Associated: NSA Publishes Steerage on Mitigating Software program Reminiscence Security Points

Associated: Google Particulars Reminiscence-Associated Safety Enhancements in Android 11

Associated: Google Engaged on Enhancing Reminiscence Security in Chrome

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