Researchers Disclose Crucial Vulnerability in Oracle Cloud Infrastructure

Researchers have disclosed a brand new extreme Oracle Cloud Infrastructure (OCI) vulnerability that may very well be exploited by customers to entry the digital disks of different Oracle prospects.

“Every digital disk in Oracle’s cloud has a singular identifier known as OCID,” Shir Tamari, head of analysis at Wiz, stated in a sequence of tweets. “This identifier isn’t thought of secret, and organizations don’t deal with it as such.”

“Given the OCID of a sufferer’s disk that’s not presently connected to an energetic server or configured as shareable, an attacker might ‘connect’ to it and acquire learn/write over it,” Tamari added.


The cloud safety agency, which dubbed the tenant isolation vulnerability “AttachMe,” stated Oracle patched the difficulty inside 24 hours of accountable disclosure on June 9, 2022.

Oracle Cloud Infrastructure
Accessing a quantity utilizing the CLI with out adequate permissions

At its core, the vulnerability is rooted in the truth that a disk may very well be connected to a compute occasion in one other account through the Oracle Cloud Identifier (OCID) with none specific authorization.

This meant that an attacker in possession of the OCID might have taken benefit of AttachMe to entry any storage quantity, leading to knowledge publicity, exfiltration, or worse, alter boot volumes to realize code execution.

In addition to understanding the OCID of the goal quantity, one other prerequisite to tug off the assault is that the adversary’s occasion should be in the identical Availability Area (AD) because the goal.


“Inadequate validation of consumer permissions is a typical bug class amongst cloud service suppliers,” Wiz researcher Elad Gabay stated. “One of the simplest ways to determine such points is by performing rigorous code critiques and complete checks for every delicate API within the improvement stage.”

The findings arrive practically 5 months after Microsoft addressed a pair of points with the Azure Database for PostgreSQL Versatile Server that would end in unauthorized cross-account database entry in a area.