CVE-2022-28117 in Navigate
Summary
by MITRE • 04/28/2022
A Server-Side Request Forgery (SSRF) in feed_parser class of Navigate CMS v2.9.4 allows remote attackers to force the application to make arbitrary requests via injection of arbitrary URLs into the feed parameter.
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Analysis
by VulDB Data Team • 12/03/2024
The vulnerability CVE-2022-28117 represents a critical Server-Side Request Forgery flaw within the feed_parser class of Navigate CMS version 2.9.4. This issue arises from insufficient input validation and sanitization mechanisms that fail to properly restrict user-supplied data when processing RSS or Atom feed URLs. The vulnerability manifests when the application accepts feed parameters without adequate filtering, allowing malicious actors to inject arbitrary URLs that the server will subsequently fetch and process on behalf of the attacker. Such a flaw fundamentally undermines the application's security boundaries and creates a pathway for unauthorized network access and data exfiltration.
The technical implementation of this vulnerability stems from the feed_parser class failing to validate or sanitize URL inputs provided through the feed parameter. When a user supplies a feed URL, the application does not adequately verify whether the input conforms to expected patterns or restricts access to internal network resources. This allows attackers to craft malicious URLs that could target internal systems, bypass firewalls, or access sensitive resources that should remain isolated from external exposure. The vulnerability operates at the application layer and can be exploited through HTTP requests that manipulate the feed parameter, making it particularly dangerous in environments where internal network resources are accessible from the web-facing application server.
The operational impact of this vulnerability extends beyond simple data theft, encompassing significant risks to network infrastructure and data integrity. Attackers can leverage this flaw to perform reconnaissance activities by accessing internal services that are normally protected by network segmentation, potentially discovering additional vulnerabilities or sensitive information. The vulnerability also enables attackers to conduct denial-of-service attacks by directing the application to fetch large or maliciously constructed feeds, consuming server resources and potentially causing application instability. Furthermore, the SSRF vulnerability can serve as a stepping stone for more sophisticated attacks, allowing threat actors to establish persistent access or escalate privileges within the compromised environment.
Mitigation strategies for CVE-2022-28117 should focus on implementing robust input validation and URL sanitization mechanisms within the feed_parser class. Organizations should enforce strict whitelisting of acceptable feed URLs, implement proper network segmentation to prevent internal resource access, and utilize application firewalls to filter malicious requests. The vulnerability aligns with CWE-918, which specifically addresses Server-Side Request Forgery, and can be mapped to ATT&CK technique T1071.004 for Application Layer Protocol: DNS, as attackers may use DNS resolution to identify internal resources. System administrators should prioritize immediate patching of Navigate CMS to version 2.9.5 or later, which includes fixes for this vulnerability, while also implementing monitoring solutions to detect anomalous feed request patterns that may indicate exploitation attempts.