Progress Software has told ShareFile customers to immediately shut down the on-premises Windows servers running Storage Zone Controllers, citing a "credible external security threat" against its enterprise file-sharing platform. The company has temporarily disabled access to affected accounts and says it has no sign of unauthorized access yet, but it has not disclosed what the threat is or whether a vulnerability is involved. Ordering a full shutdown rather than a patch strongly suggests there is no fix available. Only self-hosted Storage Zone Controllers, which typically sit internet-facing at the network edge, are affected, not cloud-only ShareFile. Progress also makes MOVEit, whose 2023 zero-day was mass-exploited by the Clop group.
Two flaws in Progress ShareFile's Storage Zones Controller can be chained for unauthenticated remote code execution - no credentials needed. An attacker first bypasses authentication via improper HTTP redirect handling, then uploads a malicious webshell through the file upload function. watchTowr published full technical details and a proof-of-concept. Around 30,000 instances are exposed online. File transfer solutions are a favorite ransomware target - Clop hit Accellion, GoAnywhere, MOVEit, and Cleo the same way.
TrustStrike Labs