Serial publisher of Windows 0-days drops exploits for 3 more unfixed flaws

Serial publisher of Windows 0-days drops exploits for 3 more unfixed flaws

Enlarge (credit: SandboxEscaper)

A serial publisher of Microsoft zeroday vulnerabilities has dropped exploit code for three more unpatched flaws, marking the seventh time the unknown person has done so in the past year.

Technical details of the vulnerabilities, along with working proof-of-concept exploits, are the work of someone using the moniker SandBoxEscaper. A local privilege-escalation vulnerability in the Windows Task Scheduler that was disclosed on Tuesday allows an authenticated attacker to gain SYSTEM privileges on an affected system. On Thursday, the person released a privilege escalation code that exploits a bug in the Windows Error Reporting service. Attackers can use it to modify files that would normally be off limits. A third exploit, which was also released Wednesday, works against Internet Explorer 11 and allows attackers to execute a JavaScript that runs with higher system access than is normally permitted by the browser sandbox.

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