[wall view]Android phone chip vulnerability is not good

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In May of this year, the US cyber security company FireEye also disclosed another loophole that Qualcomm brought into Android devices. Even more frightening is that this chip-level loophole has existed for as long as five years. In the Android security patch released by Google in March of this year, the chip vulnerability exposed by Qualcomm allowed hackers to easily implement Root on mobile phones. Root is roughly equivalent to a complete destruction of one's immune system for Android phones.

Why is the "Large Gun" always a Qualcomm chip?

As the mobile phone manufacturer's oldest brother, Qualcomm, its Xiaolong series of chips can be regarded as occupying half of the Android mobile phone camp. This has made Qualcomm a considerable profit, but it has also become a target for many hackers to take care of.

Like the chip vulnerability at the beginning of the article, almost all well-known Android devices are under threat, such as Samsung Galaxy S7/Edge, Google Nexus 5X, Nexus 6P, HTC One, M9, 10, and LG G4, G5, V10, etc. Wait. The DETK50, the most secure Android mobile phone recently announced by BlackBerry, has not been spared.

Once hackers find loopholes in Qualcomm's chips, even if there is a small loophole, it is enough to make Qualcomm, cell phone equipment vendors and users nervous. No way, the base number is large, and the probability of lying guns is also inevitable. It will not be a new thing to reach hundreds of millions of Android mobile devices.

In addition to the most obvious "target" Qualcomm, MediaTek's chips have also been exposed to security holes.

In January this year, there were media reports that some Android smartphones and tablets using MTK chips were found to have loopholes that could cause security attacks on devices. By exploiting this vulnerability, attackers will be able to obtain private data from the device and even remotely monitor all network activity.

Chip vulnerability is more serious than system vulnerabilities

Compared to the more common system (software) vulnerabilities, the vulnerabilities exposed by mobile phone chips far exceed the former in severity. Chip vulnerabilities may “sneak” in some software, taking the opportunity to obtain Root privileges from the phone and revealing the user’s privacy information. In some serious cases, there is even an opportunity to directly take over all the functions of the user's mobile phone, whether it be GPS, camera or microphone.

And unlike system (software) vulnerabilities, chip vulnerabilities are more widespread and universal. For example, a piece of software has been exploited by hackers, but users can avoid being attacked by this vulnerability without installing it on their mobile phones. However, for the chip hole, it is basically 100% "invited." If the Qualcomm Snapdragon 820 processor has a chip-level vulnerability, then all Android phones equipped with this processor may be affected, it does not matter if you are Samsung or LG.

For mobile chip giants such as Qualcomm and MediaTek, chip vulnerability will not only affect their own corporate image, but will also put cell phone manufacturers in awkward position. Users are also likely to suffer property loss due to such chip holes. .

Fixing bugs is easy, but users may not be able to update them in time

Finding loopholes and repairing them is not a difficult task for chip makers. It is mainly difficult to promptly deliver the patch for repairing the vulnerability to the user's equipment.

In order to install the patch to the user's device, the chip manufacturer actually needs a relatively lengthy program:

Chip Manufacturers ----> Google (Android) -> Your Device Manufacturer -> Your Communication Carrier -> Remotely Patch Your Device

Because of the fragmentation of the Android ecosystem, the chips and integrated hardware used by various equipment manufacturers are different. Therefore, patches for repairing chips cannot be issued to users in a general manner. These patches were first distributed by Google to cooperating mobile phone manufacturers (mobile phone manufacturers can also request from Google), then tested by mobile phone manufacturers, and finally pushed through their own ROM to promote push, which led to the majority of mobile phones are not able to update the latest patch.

Even though Qualcomm and MediaTek have released patchwork patches on the fly, it will take a lot of time for the entire process to be installed on the user's device.

Blocking loopholes requires multiple efforts

Chip makers should pay attention to the security vulnerabilities of products and actively repair them. They must promptly release fix patches and explain the reasons and solutions for the vulnerabilities.

Mobile phone manufacturers need to play an active role in cooperation. If chip-level security vulnerabilities are found, they must promptly issue early warnings to chip manufacturers and remind users of relevant security vulnerabilities. After chip vendors release repairing patches, they need to actively implement specific products. Match and test, then push repair updates to users through OTA.

For ordinary users, first of all, when buying Android, it is preferable to select some new products introduced by well-known domestic and foreign manufacturers. Even if some security vulnerabilities occur in the future, at least a faster update can be obtained in terms of system patches. . Second, in the process of using mobile phones, try to avoid downloading and installing unknown applications to minimize the security risks. If there are system updates in the mobile phone, upgrade as soon as possible, and also to prevent chip vulnerability. The role.

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