It is déjà vu everywhere once more. Microsoft has issued a caution(Opens in a brand new window) for a vulnerability within the Home windows Print Spooler application that may be exploited to allow faraway code execution with SYSTEM privileges.
Equivalent vulnerabilities have been printed in June and July. The only with essentially the most emblem reputation is CVE-2021-34527, higher referred to as “PrintNightmare,” however a number of different safety flaws associated with Print Spooler were printed within the weeks surrounding that in particular well-named factor.
It is regularly gave the look of Microsoft has scrambled to stay alongside of those vulnerabilities. The corporate launched an emergency patch for PrintNightmare in a while after its disclosure, however that replace did not totally save you attackers from exploiting the flaw to remotely execute code.
That was once meant finish on Aug. 10. Microsoft mentioned(Opens in a brand new window) it modified “the default Level and Print driving force set up and replace conduct to require administrator privileges” with the intention to “mitigate the publicly documented vulnerabilities within the Home windows Print Spooler provider.”
However then it introduced CVE-2021-36958 on Aug. 11. “A faraway code execution vulnerability exists when the Home windows Print Spooler provider improperly plays privileged report operations,” Microsoft mentioned, which might give hackers necessarily unfettered get entry to to a centered device.
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“An attacker who effectively exploited this vulnerability may just run arbitrary code with SYSTEM privileges,” Microsoft mentioned. “An attacker may just then set up systems; view, exchange, or delete information; or create new accounts with complete person rights.”
By means of now it is simple to bet how Microsoft prompt Home windows customers to shield themselves: disabling Print Spooler. (Which in flip prevents the PC in query from printing anything else.) The corporate mentioned it is these days investigating which variations of Home windows are matter to this vulnerability.
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