Apple on Monday produced security updates for iOS, macOS, and watchOS to address a few zero-working day flaws and broaden patches for a fourth vulnerability that the enterprise explained could possibly have been exploited in the wild.
The weaknesses all problem WebKit, the browser motor which powers Safari and all third-party web browsers in iOS, permitting an adversary to execute arbitrary code on concentrate on equipment. A summary of the three security bugs are as follows –
- CVE-2021-30663: An integer overflow vulnerability that could be exploited to craft destructive web articles, which may perhaps direct to code execution. The flaw was dealt with with improved enter validation.
- CVE-2021-30665: A memory corruption issue that could be exploited to craft malicious web content material, which might guide to code execution. The flaw was addressed with improved state management.
- CVE-2021-30666: A buffer overflow vulnerability that could be exploited to craft malicious web content, which may possibly direct to code execution. The flaw was addressed with enhanced memory handling.
The growth arrives a 7 days after Apple rolled out iOS 14.5 and macOS Large Sur 11.3 with a deal with for a potentially exploited WebKit Storage vulnerability. Tracked as CVE-2021-30661, the use-just after-no cost issue was discovered and documented to the iPhone maker by a security researcher named yangkang (@dnpushme) of Qihoo 360 ATA.
yangkang, together with zerokeeper and bianliang, have been credited with reporting the a few new flaws.
It is really value noting that CVE-2021-30666 only affects more mature Apple equipment these kinds of as iPhone 5s, iPhone 6, iPhone 6 Additionally, iPad Air, iPad mini 2, iPad mini 3, and iPod touch (6th generation). The iOS 12.5.3 update, which remediates this flaw, also features a deal with for CVE-2021-30661.
The enterprise mentioned it can be mindful of studies that the issues “may perhaps have been actively exploited” but, as is commonly the scenario, failed to elaborate about the mother nature of attacks, the victims that might have been focused, or the risk actors that may well be abusing them.
Users of Apple equipment are encouraged to update to the most recent variations to mitigate the risk related with the flaws.
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