{
    "data_type": "CVE",
    "data_format": "MITRE",
    "data_version": "4.0",
    "CVE_data_meta": {
        "ID": "CVE-2020-1935",
        "ASSIGNER": "security@apache.org",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Apache",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Apache Tomcat",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "Apache Tomcat 9.0.0.M1 to 9.0.30"
                                        },
                                        {
                                            "version_value": "8.5.0 to 8.5.50"
                                        },
                                        {
                                            "version_value": "7.0.0 to 7.0.99"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "HTTP Request Smuggling"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "refsource": "MLIST",
                "name": "[tomcat-announce] 20200224 [SECURITY] CVE-2020-1935 HTTP Request Smuggling",
                "url": "https://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3E"
            },
            {
                "refsource": "MLIST",
                "name": "[debian-lts-announce] 20200304 [SECURITY] [DLA 2133-1] tomcat7 security update",
                "url": "https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html"
            },
            {
                "refsource": "SUSE",
                "name": "openSUSE-SU-2020:0345",
                "url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.html"
            },
            {
                "refsource": "MLIST",
                "name": "[tomee-commits] 20200320 [jira] [Created] (TOMEE-2790) TomEE plus(7.0.7) is affected by CVE-2020-1935 & CVE-2019-17569 vulnerabilities",
                "url": "https://lists.apache.org/thread.html/rc31cbabb46cdc58bbdd8519a8f64b6236b2635a3922bbeba0f0e3743@%3Ccommits.tomee.apache.org%3E"
            },
            {
                "refsource": "MLIST",
                "name": "[tomee-commits] 20200323 [jira] [Commented] (TOMEE-2790) TomEE plus(7.0.7) is affected by CVE-2020-1935 & CVE-2019-17569 vulnerabilities",
                "url": "https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78@%3Ccommits.tomee.apache.org%3E"
            },
            {
                "refsource": "DEBIAN",
                "name": "DSA-4673",
                "url": "https://www.debian.org/security/2020/dsa-4673"
            },
            {
                "refsource": "DEBIAN",
                "name": "DSA-4680",
                "url": "https://www.debian.org/security/2020/dsa-4680"
            },
            {
                "refsource": "MLIST",
                "name": "[debian-lts-announce] 20200528 [SECURITY] [DLA 2209-1] tomcat8 security update",
                "url": "https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html"
            },
            {
                "url": "https://www.oracle.com/security-alerts/cpujul2020.html",
                "refsource": "MISC",
                "name": "https://www.oracle.com/security-alerts/cpujul2020.html"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://security.netapp.com/advisory/ntap-20200327-0005/",
                "url": "https://security.netapp.com/advisory/ntap-20200327-0005/"
            },
            {
                "refsource": "MLIST",
                "name": "[tomcat-users] 20200724 CVE-2020-1935",
                "url": "https://lists.apache.org/thread.html/r441c1f30a252bf14b07396286f6abd8089ce4240e91323211f1a2d75@%3Cusers.tomcat.apache.org%3E"
            },
            {
                "refsource": "MLIST",
                "name": "[tomcat-users] 20200724 Re: CVE-2020-1935",
                "url": "https://lists.apache.org/thread.html/r660cd379afe346f10d72c0eaa8459ccc95d83aff181671b7e9076919@%3Cusers.tomcat.apache.org%3E"
            },
            {
                "refsource": "MLIST",
                "name": "[tomcat-users] 20200724 RE: CVE-2020-1935",
                "url": "https://lists.apache.org/thread.html/rd547be0c9d821b4b1000a694b8e58ef9f5e2d66db03a31dfe77c4b18@%3Cusers.tomcat.apache.org%3E"
            },
            {
                "refsource": "MLIST",
                "name": "[tomcat-users] 20200726 Re: CVE-2020-1935",
                "url": "https://lists.apache.org/thread.html/ra5dee390ad2d60307b8362505c059cd6a726de4d146d63dfce1e05e7@%3Cusers.tomcat.apache.org%3E"
            },
            {
                "refsource": "MLIST",
                "name": "[tomcat-users] 20200727 RE: CVE-2020-1935",
                "url": "https://lists.apache.org/thread.html/r80e9c8417c77d52c62809168b96912bda70ddf7748f19f8210f745b1@%3Cusers.tomcat.apache.org%3E"
            },
            {
                "refsource": "UBUNTU",
                "name": "USN-4448-1",
                "url": "https://usn.ubuntu.com/4448-1/"
            },
            {
                "url": "https://www.oracle.com/security-alerts/cpuoct2020.html",
                "refsource": "MISC",
                "name": "https://www.oracle.com/security-alerts/cpuoct2020.html"
            }
        ]
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely."
            }
        ]
    }
}