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Sensitive AWS details exposed via replacing file param due to SSRF

Sensitive AWS details exposed via replacing file param due to SSRF

The endpoint appears to be vulnerable to Server Side Request Forgery attack. The original request was replayed by replacing file parameter with sensitive file path. The application responded with 2XX success code and also gave out sensitive AWS information in response.

Server Side Request Forgery (SSRF)

"The endpoint appears to be vulnerable to Server Side Request Forgery attack. The original request was replayed by replayed by replacing file parameter with sensitive file path. The application responded with 2XX success code and also gave out sensitive AWS information in response. Server-Side Request Forgery (SSRF) flaws occur whenever an API is fetching a remote resource without validating the user-supplied URL. It allows an attacker to coerce the application to send a crafted request to an unexpected destination, even when protected by a firewall or a VPN.\n "Modern concepts in application development make SSRF more common and more dangerous.\n" "More common - the following concepts encourage developers to access an external resource based on user input: Webhooks, file fetching from URLs, custom SSO, and URL previews.\n" "More dangerous - Modern technologies like cloud providers, Kubernetes, and Docker expose management and control channels over HTTP on predictable, well-known paths. Those channels are an easy target for an SSRF attack.\n" "It is also more challenging to limit outbound traffic from your application, because of the connected nature of modern applications.\n" + "The SSRF risk can not always be completely eliminated. While choosing a protection mechanism, it is important to consider the business risks and needs."

"The endpoint appears to be vulnerable to Server Side Request Forgery attack. The original request was replayed by replayed by replacing file parameter with sensitive file path. The application responded with 2XX success code and also gave out sensitive AWS information in response. Server-Side Request Forgery (SSRF) flaws occur whenever an API is fetching a remote resource without validating the user-supplied URL. It allows an attacker to coerce the application to send a crafted request to an unexpected destination, even when protected by a firewall or a VPN.\n "Modern concepts in application development make SSRF more common and more dangerous.\n" "More common - the following concepts encourage developers to access an external resource based on user input: Webhooks, file fetching from URLs, custom SSO, and URL previews.\n" "More dangerous - Modern technologies like cloud providers, Kubernetes, and Docker expose management and control channels over HTTP on predictable, well-known paths. Those channels are an easy target for an SSRF attack.\n" "It is also more challenging to limit outbound traffic from your application, because of the connected nature of modern applications.\n" + "The SSRF risk can not always be completely eliminated. While choosing a protection mechanism, it is important to consider the business risks and needs."

Impact of the vulnerability

Impact of the vulnerability

Successful exploitation might compromise sensitive AWS information which attacker can use to get unauthorized access to AWS.

Successful exploitation might compromise sensitive AWS information which attacker can use to get unauthorized access to AWS.

How this template works

APIs Selection

The API selection filters in this template specify the conditions that the API request must meet in order to be selected for execution. In this case, the filters check for a response code between 200 and 204 (inclusive) and also look for the presence of a "file" parameter either in the request payload or query parameters.

Execute request

The execute section of the template defines the type of request to be executed (in this case, a single request) and provides the necessary modifications to the query parameter and body parameter. In this example, the "file_key" parameter is modified to have the value "///etc/passwd".

Validation

The validation section specifies the conditions that the response must meet in order to be considered valid. It checks for a response code between 200 and 299 (inclusive) and also uses a regular expression to validate the response payload, ensuring that it matches the pattern "root:.*:0:0:".

Frequently asked questions

What is SSRF (Server Side Request Forgery) and how does it pose a security risk

How does this test identify SSRF vulnerabilities related to file parameters

What is the impact of successfully exploiting an SSRF vulnerability in this test

What are the selection filters used to identify potential SSRF vulnerabilities in this test

How does the test modify the request to simulate an SSRF attack

What validation criteria are used to determine if the test was successful

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Loved by security teams!

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"We are absolutely thrilled with the testing feature of Akto. We have used it on our graphQL endpoints and it performs flawlessly identifying common API security issues. It's truly a game-changer and we highly recommend Akto to anyone looking to effortlessly secure their API endpoints. With a user-friendly interface, it's the perfect solution for anyone looking to embrace custom rules with context to reduce false positives."

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Security team,

Loom

"We are absolutely thrilled with the testing feature of Akto. We have used it on our graphQL endpoints and it performs flawlessly identifying common API security issues. It's truly a game-changer and we highly recommend Akto to anyone looking to effortlessly secure their API endpoints. With a user-friendly interface, it's the perfect solution for anyone looking to embrace custom rules with context to reduce false positives."

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Security team,

Loom

"The text editor in Akto is absolutely remarkable. Its user-friendly YAML format strikes the perfect balance between simplicity and power. With intuitive features like 'API selection filter', 'Execute', Validate' creating test rules becomes incredibly easy. Akto's test editor is a game-changer, enabling seamless creation of highly personalized and effective tests that could meet the needs of any modern day organization. "

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Security team,

Rippling

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