cvelist/2021/31xxx/CVE-2021-31805.json

{
    "CVE_data_meta": {
        "ASSIGNER": "security@apache.org",
        "ID": "CVE-2021-31805",
        "STATE": "PUBLIC",
        "TITLE": "Forced OGNL evaluation, when evaluated on raw not validated user input in tag attributes, may lead to RCE."
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Apache Struts",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "2.0.0 to 2.5.29"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "Apache Software Foundation"
                }
            ]
        }
    },
    "credit": [
        {
            "lang": "eng",
            "value": "Apache Struts would like to thank Chris McCown for reporting this issue!"
        }
    ],
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "The fix issued for CVE-2020-17530 was incomplete. So from Apache Struts 2.0.0 to 2.5.29, still some of the tag\u2019s attributes could perform a double evaluation if a developer applied forced OGNL evaluation by using the %{...} syntax. Using forced OGNL evaluation on untrusted user input can lead to a Remote Code Execution and security degradation."
            }
        ]
    },
    "generator": {
        "engine": "Vulnogram 0.0.9"
    },
    "impact": [
        {}
    ],
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-917 Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "refsource": "MISC",
                "url": "https://cwiki.apache.org/confluence/display/WW/S2-062",
                "name": "https://cwiki.apache.org/confluence/display/WW/S2-062"
            },
            {
                "refsource": "MLIST",
                "name": "[oss-security] 20220412 CVE-2021-31805: Apache Struts: Forced OGNL evaluation, when evaluated on raw not validated user input in tag attributes, may lead to RCE.",
                "url": "http://www.openwall.com/lists/oss-security/2022/04/12/6"
            },
            {
                "url": "https://www.oracle.com/security-alerts/cpujul2022.html",
                "refsource": "MISC",
                "name": "https://www.oracle.com/security-alerts/cpujul2022.html"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://security.netapp.com/advisory/ntap-20220420-0001/",
                "url": "https://security.netapp.com/advisory/ntap-20220420-0001/"
            }
        ]
    },
    "source": {
        "discovery": "UNKNOWN"
    },
    "work_around": [
        {
            "lang": "eng",
            "value": "Avoid using forced OGNL evaluation on untrusted user input, and/or upgrade to Struts 2.5.30 which checks if expression evaluation won\u2019t lead to the double evaluation.\n\nPlease read our Security Bulletin S2-062 for more details."
        }
    ]
}