Home / Tech News / Microsoft JET vulnerability still open to attacks, despite recent patch

Microsoft JET vulnerability still open to attacks, despite recent patch

A vulnerability within the Microsoft JET database engine remains to be open to assaults, even after Microsoft shipped an replace previous this week throughout the October 2018 Patch Tuesday.

The vulnerability got here to gentle in mid-September after the Development Micro 0-Day Initiative (ZDI) posted information about it on its web site.

ZDI stated Microsoft had didn’t patch the flaw in due time they usually made up our minds to make the problem public, so customers and firms may just take movements to offer protection to themselves towards any exploitation makes an attempt.

The vulnerability, which was once a zero-day on the time of its disclosure, raised some alarms, principally because of the truth that the JET database engine is integrated in all variations of Home windows, and supplied attackers with an enormous assault vector they may goal.

The JET engine was once one among Microsoft’s first forays in database applied sciences. It was once advanced within the 90s and has been used to energy more than a few Microsoft apps, with probably the most recognizable names being Get right of entry to, Visible Fundamental, Microsoft Venture, and IIS three.zero.

JET has been deprecated and changed through more moderen applied sciences within the intervening time, however it’s nonetheless integrated with Home windows for legacy function.

Data safety mavens criticized Microsoft for failing to patch the vulnerability, principally as it allowed a faraway complete compromise of the consumer’s gadget.

Additionally they remembered that Microsoft was once additionally overdue to patch a flaw in any other legacy product closing 12 months –Administrative center’s legacy Equation Editor app– which become one of the closely exploited vulnerabilities previously 12 months.

Thankfully, Microsoft did see the issue with leaving the JET zero-day unpatched finally and shipped an replace this previous Tuesday.

However consistent with Mitja Kolsek, co-founder of 0patch, Microsoft’s contemporary JET patch is incomplete, and an attacker can nonetheless exploit the unique vulnerability.

“At this level we will be able to simplest state that we discovered the reputable repair to be fairly other to our micropatch, and sadly in some way that simplest restricted the vulnerability as an alternative of getting rid of it,” Kolsek stated. “We promptly notified Microsoft about it and won’t disclose additional main points or proof-of-concept till they factor a right kind repair.”

0Patch, who launched a so-called customized “micro-patch” for the JET zero-day when it got here out, launched any other micro-patch nowadays till Microsoft corrects its authentic JET repair.

The excellent news is that till now, neither Microsoft nor 0Patch have noticed hackers seeking to exploit this vulnerability.

Moreover, to take advantage of the vulnerability, a consumer should open/import a specifically crafted Microsoft JET Database Engine document, which means assaults cannot be computerized at scale, and social engineering remains to be required to trick the consumer into opening a malicious document.

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