Karl.Fail

Tag: cwe-918

  • CVE-2025-29972: Critical SSRF Vulnerability in Azure Storage Resource Provider

    Critical SSRF Flaw Discovered in Azure Storage Resource Provider

    On May 8, 2025, Microsoft disclosed a critical vulnerability identified as CVE-2025-29972, impacting the Azure Storage Resource Provider (SRP). This vulnerability allows authenticated attackers to perform Server-Side Request Forgery (SSRF) across the network, potentially enabling spoofing attacks in affected cloud environments.

    What is SSRF?

    Server-Side Request Forgery (SSRF) is a security flaw where an attacker can force a server to make HTTP requests to internal or external systems on their behalf. This can lead to unauthorized access to sensitive services, token leaks, or privilege escalation, especially in cloud environments with metadata endpoints or internal APIs.

    Technical Details

    The vulnerability resides in Azure’s SRP service and arises when an authenticated user sends specially crafted network requests that trick the service into sending spoofed responses or requests. Although the user must be authorized, no user interaction is required, and the attack can be performed remotely.

    The vulnerability is categorized under CWE-918: Server-Side Request Forgery (SSRF).

    CVSS v3.1 Score

    The issue has been assigned a CVSS v3.1 base score of 9.9 (CRITICAL) with the following vector:

    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

    This score reflects:

    • Attack Vector: Network – remotely exploitable
    • Attack Complexity: Low – requires no specialized conditions
    • Privileges Required: Low – attacker must be authenticated
    • User Interaction: None
    • Scope: Changed – impacts components beyond the vulnerable one
    • Impact on Confidentiality, Integrity, and Availability: High

    Affected Systems

    The Azure Storage Resource Provider is a component within the Azure ecosystem that manages and orchestrates storage resources such as blobs, files, and queues. While specific version identifiers were not disclosed, Microsoft has confirmed the issue affects the SRP service in its hosted environments.

    Mitigation

    Microsoft has issued guidance and mitigation steps via its security advisory. Cloud administrators should:

    • Review the official Microsoft advisory
    • Apply available patches or configuration changes
    • Restrict overly permissive user roles
    • Monitor access logs for unusual internal network requests

    References

    Conclusion

    CVE-2025-29972 presents a critical risk in Microsoft Azure environments due to the nature of SSRF vulnerabilities. Although exploitation requires authentication, the low complexity and high impact make immediate action essential. Organizations should take swift steps to validate protections and follow vendor recommendations.

  • CVE-2025-47733: Critical SSRF Vulnerability in Microsoft Power Apps

    Overview

    CVE-2025-47733 is a critical Server-Side Request Forgery (SSRF) vulnerability identified in Microsoft Power Apps. This flaw allows unauthorized remote attackers to exploit improperly handled server-side requests, potentially disclosing sensitive internal information across the network.

    What is SSRF?

    Server-Side Request Forgery (SSRF) vulnerabilities occur when an attacker can manipulate a server to make unauthorized requests to internal or external services on their behalf. This is especially dangerous in cloud-based and internal environments where attackers can access resources that are not exposed to the public internet.

    In this case, Microsoft Power Apps is vulnerable to SSRF due to insufficient input validation, allowing attackers to craft URLs that the server processes, potentially leaking internal data.

    Technical Details

    This vulnerability is categorized as CWE-918: Server-Side Request Forgery (SSRF). The flaw allows:

    • Remote attackers with no prior access to craft requests that the server will forward to internal services
    • Unauthorized disclosure of sensitive information
    • No user interaction or credentials required

    CVSS Severity

    According to the Common Vulnerability Scoring System (CVSS) v3.1, the vulnerability has a base score of 9.1 (Critical):

    • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    • Confidentiality Impact: High
    • Integrity Impact: High

    This score reflects the ease of exploitation and the potential severity of unauthorized data access and manipulation.

    SSVC Assessment

    The CISA Stakeholder-Specific Vulnerability Categorization (SSVC) analysis outlines:

    • No known exploitation as of publication
    • Vulnerability is automatable
    • Technical impact is considered total

    These factors highlight the urgency of addressing the issue before exploitation tools emerge.

    Mitigation Guidance

    Microsoft has released guidance and updates for mitigating this vulnerability. Recommended steps include:

    • Apply patches or updates provided by Microsoft through the MSRC advisory
    • Review and harden any inputs that lead to server-side network calls
    • Monitor internal service access for anomalies

    References

    Organizations using Microsoft Power Apps should prioritize patching and review network configurations to prevent unauthorized internal access. SSRF vulnerabilities are particularly dangerous in cloud and microservice environments where internal trust boundaries are critical.

  • CVE-2025-36560: Server-Side Request Forgery in a-blog cms

    Overview

    A critical server-side request forgery (SSRF) vulnerability has been identified in multiple versions of a-blog cms, a content management system developed by Appleple Inc. Tracked as CVE-2025-36560, this flaw may allow unauthenticated remote attackers to access sensitive internal information by sending specially crafted requests.

    What is SSRF?

    Server-Side Request Forgery (SSRF) is a vulnerability where an attacker can make the server perform unintended requests on behalf of the attacker. This can lead to exposure of internal systems, bypass of network access controls, and access to services not directly exposed to the internet.

    The issue falls under CWE-918, a classification for SSRF vulnerabilities. In this case, a-blog cms does not sufficiently validate input that is used to form outbound server requests.

    Vulnerable Versions

    The following versions of a-blog cms are affected:

    • 2.8.85 and earlier (2.8.x series)
    • 2.9.52 and earlier (2.9.x series)
    • 2.10.63 and earlier (2.10.x series)
    • 2.11.75 and earlier (2.11.x series)
    • 3.0.47 and earlier (3.0.x series)
    • 3.1.43 and earlier (3.1.x series)

    Users are urged to upgrade to the latest version as soon as possible to mitigate the risk.

    Severity and CVSS Scores

    This vulnerability has been evaluated with the following scores:

    • CVSS v3.1 Score: 8.6 (High)
      Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
    • CVSS v4.0 Score: 9.2 (Critical)
      Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

    These ratings highlight the severity of the vulnerability. With no user interaction and no privileges required, the exploitability is high and the confidentiality impact is substantial.

    Risk Context from SSVC

    The Stakeholder-Specific Vulnerability Categorization (SSVC) assessment by CISA reports:

    • No known active exploitation
    • Vulnerability is automatable
    • Partial technical impact

    While exploitation has not been observed, the risk remains significant due to the potential for future automated attacks.

    Mitigation Recommendations

    To protect against this vulnerability, administrators should:

    • Update to a version of a-blog cms that addresses CVE-2025-36560
    • Restrict external requests from server-side logic wherever possible
    • Validate and sanitize all user inputs used in server requests
    • Monitor network traffic and implement firewall rules to limit unnecessary outbound access

    References

    Prompt action is advised to avoid potential exploitation of this critical SSRF vulnerability. Ensuring systems are patched and network architecture minimizes exposure is essential in today’s threat landscape.