Google Discloses Windows Zero Day Exploited In The Wild

Zero Day Is Expected To Be Patched On November 10, Which Is The Date Of Microsoft’s Next Patch Tuesday, According To Ben Hawkes,

Google Discloses Windows Zero Day Exploited In The Wild
By Catalin Cimpanu

Team lead for Project Zero, Google’s elite vulnerability research team.

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On Twitter, Hawkes said the Windows zero day (tracked as CVE-2020-17087) was used as part of a two-punch attack, together with another a Chrome zero day (tracked as CVE-2020-15999) that his team disclosed last week.

The Chrome zero day was used to allow attackers to run malicious code inside Chrome, while the Windows zero days was the second part of this attack, allowing threat actors to escape Chrome’s secure container and run code on the underlying operating system — in what security experts call a sandbox escape. The Google Project Zero team notified Microsoft last week and gave the company seven days to patch the bug. Details were published today, as Microsoft did not release a patch in the allotted time.

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WINDOWS 7 TO WINDOWS 10 ARE IMPACTED

According to Google’s report, the zero-day is a bug in the Windows kernel that can be exploited to elevate an attacker’s code with additional permissions. Per the report, the vulnerability impacts all Windows versions between Windows 7 and the most recent Windows 10 release.

Proof of concept code to reproduce attacks was also include.

Hawkes did not provide details about who was using these two zero days. Usually, most zero days are discovered by nation-sponsored hacking groups or large cybercrime groups. Per the same Google report, the attacks were also confirmed by a second Google security team, Google’s Threat Analysis Group (TAG).

  • Shane Huntley, Google TAG Director, said the attacks are not related to the US election.
  • The Chrome zero day was patched in Chrome version 86.0.4240.111.
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This is the second time that Google discloses a two-pronged attack that involved a Windows and a Chrome zero days. In March 2019, Google said that threat actors have also combined a Chrome zero days (CVE-2019-5786) with a Windows zero day (CVE-2019-0808).

This news was originally published at ZD Net

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