MISP misp-modules up to 3.0.10 cisco_firesight_manager_ACL_rule_export ip-dst/url/config os command injection

Summaryinfo

A vulnerability was found in MISP misp-modules up to 3.0.10. It has been rated as critical. This vulnerability affects unknown code of the component cisco_firesight_manager_ACL_rule_export. This manipulation of the argument ip-dst/url/config causes os command injection. This vulnerability is registered as CVE-2026-97863. Remote exploitation of the attack is possible. No exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in MISP misp-modules up to 3.0.10. It has been declared as critical. Affected by this vulnerability is an unknown function of the component cisco_firesight_manager_ACL_rule_export. The manipulation of the argument ip-dst/url/config with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The cisco_firesight_manager_ACL_rule_export module in misp-modules generates a shell script (.sh) that authenticates to and calls the Cisco fireSIGHT Manager API. The module interpolates configuration values (IP address, login, password, domain ID, policy ID) and MISP attribute values (destination IPs, URLs, event info comments) directly into single-quoted shell string assignments without any escaping or sanitization. Because the values are placed inside single-quoted shell strings, any value containing a single-quote character (e.g., a crafted ip-dst or url attribute value submitted to MISP) breaks out of the quoting context, allowing an attacker to inject arbitrary shell commands into the exported script. A security analyst who subsequently executes the generated .sh file unmodified would run the injected commands with their own privileges, potentially exposing fireSIGHT Manager credentials, modifying ACL rules, or compromising the analyst workstation. Additionally, the module contained a secondary defect where the variable 'config' was only assigned inside a conditional block but referenced unconditionally afterward, causing a NameError (denial of service) when the request payload lacked a 'config' key. The vulnerability requires the attacker to have the ability to submit MISP events or attributes containing a single-quote character and the victim to execute the exported script. No authentication bypass is required beyond standard MISP event-submission privileges.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-97863 since 09/25/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1202 for this issue.

Applying the patch 625b54908efbd6acc8343aa3370d401dd370e748 is able to eliminate this problem.

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Productinfo

Vendor

• MISP

Name

• misp-modules

Version

• 3.0.0
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.0.6
• 3.0.7
• 3.0.8
• 3.0.9
• 3.0.10

License

• open-source

CPE 2.3info

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CPE 2.2info

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Entryinfo

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