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Critical “10-out-of-10” Linux kernel SMB hole – should you worry?

by Paul Ducklin Just before the Christmas weekend – in fact, at about the same time that beleaguered password management service LastPass was admitting that, yes, your password vaults were stolen by criminals after all – we noticed a serious-sounding Linux kernel vulnerability that hit the news. The alerts came from Trend Micro’s Zero Day Initiative (ZDI), probably best known for buying up zero-day security bugs via the popular Pwn2Own competitions, where bug-bounty hunting teams…

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How to hack an unpatched Exchange server with rogue PowerShell code

by Paul Ducklin Just under two months ago, some worrying bug news broke: a pair of zero-day vulnerabilities were announced in Microsoft Exchange. As we advised at the time, these vulnerabilities, officially designated CVE-2022-41040 and CVE-2022-41082: [were] two zero-days that [could] be chained together, with the first bug used remotely to open enough of a hole to trigger the second bug, which potentially allows remote code execution (RCE) on the Exchange server itself. The first…

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