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Vulnerability in BackupBuddy Plugin Exploited to Hack WordPress Websites

By Ionut Arghire on September 12, 2022

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A not too long ago resolved vulnerability within the BackupBuddy WordPress plugin has been exploited in malicious assaults since late August, Defiant’s Wordfence group warns.

The BackupBuddy plugin, which has roughly 140,000 lively installations, is supposed to assist WordPress web site directors simply handle their backup operations. The plugin permits customers to retailer the backups to varied on-line and native locations.

Tracked as CVE-2022-31474 (CVSS rating of seven.5), the exploited vulnerability exists due to an insecure methodology of downloading the backups for native storing, which permits any unauthenticated consumer to fetch recordsdata from the server.

Particularly, the plugin didn’t have functionality checks or nonce validation applied for the operate meant for downloading native backup recordsdata, and in addition registered an admin_init hook for the operate.

“Which means that the operate may very well be triggered through any administrative web page, together with these that may be known as with out authentication (admin-post.php), making it attainable for unauthenticated customers to name the operate,” Wordfence explains.

Moreover, as a result of the backup path was not being validated, an attacker may provide an arbitrary file to be subsequently downloaded, the WordPress safety agency says.

The safety flaw impacts variations 8.5.8.Zero to eight.7.4.1 of BackupBuddy and was totally resolved with a September 2 safety replace.

Nonetheless, the primary assaults focusing on this vulnerability began roughly one week earlier than the patch was launched, with over 4.9 million exploitation makes an attempt seen as of final week, Wordfence says.

Risk actors have been exploiting the flaw to acquire recordsdata storing delicate data that can be utilized to additional compromise the affected web site.

“As a result of the truth that that is an actively exploited vulnerability, we strongly encourage you to make sure your web site has been up to date to the most recent patched model 8.7.5 which iThemes has made accessible to all web site homeowners working a weak model no matter licensing standing,” the WordPress safety agency notes.

Wordfence has shared indicators of compromise (IoCs) to assist web site homeowners and directors determine assaults, and recommends that they verify their installations for a possible compromise.

Associated: WordPress 6.0.2 Patches Vulnerability That Might Impression Tens of millions of Legacy Websites

Associated: Unpatched WPBakery WordPress Plugin Vulnerability More and more Focused in Assaults

Associated: Exploited Vulnerability Patched in WordPress Plugin With Over 1 Million Installations

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