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Zero-Day In Popular jQuery Plugin Actively Exploited For At Least Three Years

samedi 20 octobre 2018, 03:30 , par Slashdot
Slashdot reader generic shares a report from ZDNet: For at least three years, hackers have abused a zero-day in one of the most popular jQuery plugins to plant web shells and take over vulnerable web servers, ZDNet has learned. The vulnerability impacts the jQuery File Upload plugin authored by prodigious German developer Sebastian Tschan, most commonly known as Blueimp. The plugin is the second most starred jQuery project on GitHub, after the jQuery framework itself. It is immensely popular, has been forked over 7,800 times, and has been integrated into hundreds, if not thousands, of other projects, such as CMSs, CRMs, Intranet solutions, WordPress plugins, Drupal add-ons, Joomla components, and so on.

Earlier this year, Larry Cashdollar, a security researcher for Akamai's SIRT (Security Intelligence Response Team), has discovered a vulnerability in the plugin's source code that handles file uploads to PHP servers. Cashdollar says that attackers can abuse this vulnerability to upload malicious files on servers, such as backdoors and web shells. The Akamai researcher says the vulnerability has been exploited in the wild. 'I've seen stuff as far back as 2016,' the researcher told ZDNet in an interview. The vulnerability was one of the worst kept secrets of the hacker scene and appears to have been actively exploited, even before 2016. Cashdollar found several YouTube videos containing tutorials on how one could exploit the jQuery File Upload plugin vulnerability to take over servers. One of three YouTube videos Cashdollar shared with ZDNet is dated August 2015. Thankfully, the CVE-2018-9206 identifier was pushed earlier this month to address this issue. 'All jQuery File Upload versions before 9.22.1 are vulnerable,' reports ZDNet. 'Since the vulnerability affected the code for handling file uploads for PHP apps, other server-side implementations should be considered safe.'

Read more of this story at Slashdot.
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