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Oracle Cloud Infrastructure Vulnerability Uncovered Delicate Knowledge

By Ionut Arghire on September 22, 2022

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Cloud safety firm Wiz has revealed info on an Oracle Cloud Infrastructure (OCI) vulnerability permitting attackers to switch customers’ storage volumes with out authorization.

Known as #AttachMe and talked about in Oracle’s July 2022 Essential Patch Replace, the vulnerability may have uncovered delicate knowledge to attackers realizing the sufferer’s Oracle Cloud Identifier (OCID).

“OCI clients may have been focused by an attacker with information of #AttachMe. Any unattached storage quantity, or connected storage volumes permitting multi-attachment, may have been learn from or written to so long as an attacker had its Oracle Cloud Identifier (OCID),” Wiz safety researcher Elad Gabay explains.

Basically, due to this vulnerability, cloud isolation in OCI not labored, permitting anybody to connect disks to digital machines in different accounts, with out requiring permissions.

An attacker may exploit the safety problem by buying the OCID of the sufferer after which initiating a compute occasion on a tenant positioned on the identical availability area because the goal quantity.

After attaching a quantity, the attacker may then goal the sufferer’s quantity to realize learn/write privileges to it. The goal quantity must be both indifferent or connected as shareable, the safety researcher explains.

Along with having the ability to exfiltrate delicate knowledge or steal credentials for lateral motion, this kind of entry may permit an attacker to switch block volumes and boot volumes to realize code execution capabilities.

The bug, Gabay explains, resided within the validation of write permissions when attaching a quantity, permitting for this connect operation to be carried out with none authorization.

“As well as, attachment was doable throughout completely different tenancies: we managed to connect a quantity from one tenancy to a compute occasion in one other tenancy,” the researcher notes.

Profitable exploitation of this bug may have allowed an attacker to question all out there volumes, get hold of their OCIDs, after which entry the knowledge saved on them.

As a result of OCIDs aren’t typically thought-about secrets and techniques, that means that they are often discovered by way of on-line searches, Wiz considers that #AttachMe may have been simply exploited for privilege escalation throughout the similar compartment or tenancy, in addition to for cross-tenant entry.

Oracle addressed the vulnerability at some point after Wiz reported it in June. The tech big talked about Gabay’s contribution in its July 2022 Essential Patch Replace advisory.

Associated: Oracle Releases 349 New Safety Patches With July 2022 CPU

Associated: Class Motion Lawsuit Filed In opposition to Oracle Over Knowledge Assortment Practices

Associated: Oracle Releases 520 New Safety Patches With April 2022 CPU

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