{"id":3983,"date":"2025-07-16T13:00:02","date_gmt":"2025-07-16T13:00:02","guid":{"rendered":"https:\/\/cybersecurityinfocus.com\/?p=3983"},"modified":"2025-07-16T13:00:02","modified_gmt":"2025-07-16T13:00:02","slug":"one-click-to-compromise-oracle-cloud-code-editor-flaw-exposed-users-to-rce","status":"publish","type":"post","link":"https:\/\/cybersecurityinfocus.com\/?p=3983","title":{"rendered":"One click to compromise: Oracle Cloud Code Editor flaw exposed users to RCE"},"content":{"rendered":"
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A now-patched vulnerability in Oracle Cloud Infrastructure\u2019s (OCI) Code Editor exposed users to remote code execution (RCE) attacks with just a single click.<\/p>\n

Discovered by Tenable Research, the flaw could allow attackers to upload malicious files to a victim\u2019s Cloud Shell environment and potentially pivot to broader services. According to the researchers, the culprit was a poorly guarded file upload endpoint hidden inside a browser-based IDE.<\/p>\n

\u201cThe attack happens through a victim logged into OCI visiting a malicious link,\u201d said Liv Matan, senior cloud security researcher, Tenable. \u201cIt reinforces the need to treat browser-based development tools with the same security scrutiny as production systems.\u201d<\/p>\n

While a CVE ID and severity rating haven\u2019t been issued yet, Matan said it was brought to Oracle\u2019s notice and was swiftly remediated by the company.<\/p>\n

<\/a>CSRF oversight leading to RCE<\/h2>\n

OCI\u2019s Code Editor, a web-based IDE built for managing resources like Functions, Resource Manager, and Data Science, was designed for seamless developer workflows. But it\u2019s tight integration with Cloud Shell, Oracle\u2019s browser-based command-line environment, that shares session context, file systems, and runtime environment, created the exposure.<\/p>\n

Tenable researchers found that while Cloud Shell\u2019s direct upload mechanism played by the rules, Code Editor quietly exposed a file upload endpoint, lacking cross-site request forgery (CSRF<\/a>) protections.<\/p>\n

\u201cThe attacker\u2019s page sends a silent POST request to the vulnerable file-upload endpoint in Code Editor,\u201d Matan said. \u201c This places a crafted file into Cloud Shell. When the victim launches Cloud Shell, the file is executed, leading to remote code execution.\u201d<\/p>\n

The permissiveness likely stemmed from an architectural trust assumption, Matan added.<\/p>\n

Attacks could have a wider blast radius<\/h2>\n

Because Code Editor operates on the same underlying file system as the Cloud Shell \u2014 essentially a Linux home directory in the cloud, attackers could tamper with files used by other integrated services. This turns the flaw in the seemingly contained developer tool into an exposure for lateral movement across the OCI landscape.<\/p>\n

\u201cIn practice, this could involve leveraging the victim\u2019s active session and credentials to access other OCI resources by impersonating the attached cloud identity,\u201d Matan pointed out. \u201cThe blast radius of such an attack depends on the permissions of the compromised identity.\u201d<\/p>\n

The nature of the Code Editor integrations can allow an attacker more attack primitives, such as modifying functions, accessing Resource Manager stacks, or injecting code into Data Science notebooks, depending on the victim\u2019s environment, Matan added.<\/p>\n

Because Cloud Shell is pre-authenticated with the user\u2019s identity and shares session state, it\u2019s considered privileged. Any code executed in this environment has the same level of access as the logged-in user, making it a tempting target for attackers.<\/p>\n

Matan noted that detection of this exploit would be challenging without specific auditing on file changes or unusual CLI behavior. However, enhanced logging around unexpected uploads could help identify anomalous activity early.<\/p>\n

While Oracle did not immediately respond to CSO\u2019s request for comments, the disclosure added that Oracle\u2019s fix came in the form of a CSRF token requirement. This was enforced via a custom HTTP header that browsers can\u2019t spoof in cross-origin requests, the researchers said.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

A now-patched vulnerability in Oracle Cloud Infrastructure\u2019s (OCI) Code Editor exposed users to remote code execution (RCE) attacks with just a single click. Discovered by Tenable Research, the flaw could allow attackers to upload malicious files to a victim\u2019s Cloud Shell environment and potentially pivot to broader services. According to the researchers, the culprit was […]<\/p>\n","protected":false},"author":0,"featured_media":3984,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-3983","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-education"],"_links":{"self":[{"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/posts\/3983"}],"collection":[{"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3983"}],"version-history":[{"count":0,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/posts\/3983\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/media\/3984"}],"wp:attachment":[{"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3983"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3983"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3983"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}