gsd-2020-1935
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
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.
Aliases
Aliases
CVE-2020-1935


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-1935",
    "description": "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.",
    "id": "GSD-2020-1935",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-1935.html",
      "https://www.debian.org/security/2020/dsa-4680",
      "https://www.debian.org/security/2020/dsa-4673",
      "https://access.redhat.com/errata/RHSA-2021:3140",
      "https://access.redhat.com/errata/RHSA-2021:1030",
      "https://access.redhat.com/errata/RHSA-2021:0882",
      "https://access.redhat.com/errata/RHSA-2020:5020",
      "https://access.redhat.com/errata/RHSA-2020:4847",
      "https://access.redhat.com/errata/RHSA-2020:3305",
      "https://access.redhat.com/errata/RHSA-2020:3303",
      "https://access.redhat.com/errata/RHSA-2020:2367",
      "https://access.redhat.com/errata/RHSA-2020:1521",
      "https://access.redhat.com/errata/RHSA-2020:1520",
      "https://ubuntu.com/security/CVE-2020-1935",
      "https://advisories.mageia.org/CVE-2020-1935.html",
      "https://alas.aws.amazon.com/cve/html/CVE-2020-1935.html",
      "https://linux.oracle.com/cve/CVE-2020-1935.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-1935"
      ],
      "details": "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.",
      "id": "GSD-2020-1935",
      "modified": "2023-12-13T01:21:58.182188Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security@apache.org",
        "ID": "CVE-2020-1935",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "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"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Apache"
            }
          ]
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      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "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."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "HTTP Request Smuggling"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "[tomcat-announce] 20200224 [SECURITY] CVE-2020-1935 HTTP Request Smuggling",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3E"
          },
          {
            "name": "[debian-lts-announce] 20200304 [SECURITY] [DLA 2133-1] tomcat7 security update",
            "refsource": "MLIST",
            "url": "https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html"
          },
          {
            "name": "openSUSE-SU-2020:0345",
            "refsource": "SUSE",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.html"
          },
          {
            "name": "[tomee-commits] 20200320 [jira] [Created] (TOMEE-2790) TomEE plus(7.0.7) is affected by CVE-2020-1935 \u0026 CVE-2019-17569 vulnerabilities",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/rc31cbabb46cdc58bbdd8519a8f64b6236b2635a3922bbeba0f0e3743@%3Ccommits.tomee.apache.org%3E"
          },
          {
            "name": "[tomee-commits] 20200323 [jira] [Commented] (TOMEE-2790) TomEE plus(7.0.7) is affected by CVE-2020-1935 \u0026 CVE-2019-17569 vulnerabilities",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78@%3Ccommits.tomee.apache.org%3E"
          },
          {
            "name": "DSA-4673",
            "refsource": "DEBIAN",
            "url": "https://www.debian.org/security/2020/dsa-4673"
          },
          {
            "name": "DSA-4680",
            "refsource": "DEBIAN",
            "url": "https://www.debian.org/security/2020/dsa-4680"
          },
          {
            "name": "[debian-lts-announce] 20200528 [SECURITY] [DLA 2209-1] tomcat8 security update",
            "refsource": "MLIST",
            "url": "https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html"
          },
          {
            "name": "https://www.oracle.com/security-alerts/cpujul2020.html",
            "refsource": "MISC",
            "url": "https://www.oracle.com/security-alerts/cpujul2020.html"
          },
          {
            "name": "https://security.netapp.com/advisory/ntap-20200327-0005/",
            "refsource": "CONFIRM",
            "url": "https://security.netapp.com/advisory/ntap-20200327-0005/"
          },
          {
            "name": "[tomcat-users] 20200724 CVE-2020-1935",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/r441c1f30a252bf14b07396286f6abd8089ce4240e91323211f1a2d75@%3Cusers.tomcat.apache.org%3E"
          },
          {
            "name": "[tomcat-users] 20200724 Re: CVE-2020-1935",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/r660cd379afe346f10d72c0eaa8459ccc95d83aff181671b7e9076919@%3Cusers.tomcat.apache.org%3E"
          },
          {
            "name": "[tomcat-users] 20200724 RE: CVE-2020-1935",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/rd547be0c9d821b4b1000a694b8e58ef9f5e2d66db03a31dfe77c4b18@%3Cusers.tomcat.apache.org%3E"
          },
          {
            "name": "[tomcat-users] 20200726 Re: CVE-2020-1935",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/ra5dee390ad2d60307b8362505c059cd6a726de4d146d63dfce1e05e7@%3Cusers.tomcat.apache.org%3E"
          },
          {
            "name": "[tomcat-users] 20200727 RE: CVE-2020-1935",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/r80e9c8417c77d52c62809168b96912bda70ddf7748f19f8210f745b1@%3Cusers.tomcat.apache.org%3E"
          },
          {
            "name": "USN-4448-1",
            "refsource": "UBUNTU",
            "url": "https://usn.ubuntu.com/4448-1/"
          },
          {
            "name": "https://www.oracle.com/security-alerts/cpuoct2020.html",
            "refsource": "MISC",
            "url": "https://www.oracle.com/security-alerts/cpuoct2020.html"
          },
          {
            "name": "https://www.oracle.com/security-alerts/cpujan2021.html",
            "refsource": "MISC",
            "url": "https://www.oracle.com/security-alerts/cpujan2021.html"
          },
          {
            "name": "[tomcat-dev] 20210428 [Bug 65272] Problems proccessing HTTP request without CR in last versions",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/r9ce7918faf347e7aac32be930bf26c233b0b140fe37af0bb294158b6@%3Cdev.tomcat.apache.org%3E"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "(,7.0.100),[8.0.0,8.5.51),[9.0.0,9.0.31)",
          "affected_versions": "All versions before 7.0.100, all versions starting from 8.0.0 before 8.5.51, all versions starting from 9.0.0 before 9.0.31",
          "cvss_v2": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-444",
            "CWE-707",
            "CWE-937"
          ],
          "date": "2021-08-19",
          "description": "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.",
          "fixed_versions": [
            "7.0.100",
            "8.5.51",
            "9.0.31"
          ],
          "identifier": "CVE-2020-1935",
          "identifiers": [
            "GHSA-qxf4-chvg-4r8r",
            "CVE-2020-1935"
          ],
          "not_impacted": "All versions starting from 7.0.100 before 8.0.0, all versions starting from 8.5.51 before 9.0.0, all versions starting from 9.0.31",
          "package_slug": "maven/org.apache.tomcat.embed/tomcat-embed-core",
          "pubdate": "2020-02-28",
          "solution": "Upgrade to versions 7.0.100, 8.5.51, 9.0.31 or above.",
          "title": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request Smuggling\u0027)",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-1935",
            "https://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3E",
            "https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78@%3Ccommits.tomee.apache.org%3E",
            "https://lists.apache.org/thread.html/rc31cbabb46cdc58bbdd8519a8f64b6236b2635a3922bbeba0f0e3743@%3Ccommits.tomee.apache.org%3E",
            "https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html",
            "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.html",
            "https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html",
            "https://security.netapp.com/advisory/ntap-20200327-0005/",
            "https://www.debian.org/security/2020/dsa-4673",
            "https://www.debian.org/security/2020/dsa-4680",
            "https://lists.apache.org/thread.html/r441c1f30a252bf14b07396286f6abd8089ce4240e91323211f1a2d75@%3Cusers.tomcat.apache.org%3E",
            "https://lists.apache.org/thread.html/r660cd379afe346f10d72c0eaa8459ccc95d83aff181671b7e9076919@%3Cusers.tomcat.apache.org%3E",
            "https://lists.apache.org/thread.html/ra5dee390ad2d60307b8362505c059cd6a726de4d146d63dfce1e05e7@%3Cusers.tomcat.apache.org%3E",
            "https://lists.apache.org/thread.html/rd547be0c9d821b4b1000a694b8e58ef9f5e2d66db03a31dfe77c4b18@%3Cusers.tomcat.apache.org%3E",
            "https://www.oracle.com/security-alerts/cpujul2020.html",
            "https://lists.apache.org/thread.html/r80e9c8417c77d52c62809168b96912bda70ddf7748f19f8210f745b1@%3Cusers.tomcat.apache.org%3E",
            "https://usn.ubuntu.com/4448-1/",
            "https://lists.apache.org/thread.html/r9ce7918faf347e7aac32be930bf26c233b0b140fe37af0bb294158b6@%3Cdev.tomcat.apache.org%3E",
            "https://www.oracle.com/security-alerts/cpujan2021.html",
            "https://www.oracle.com/security-alerts/cpuoct2020.html",
            "https://github.com/advisories/GHSA-qxf4-chvg-4r8r"
          ],
          "uuid": "c895dfeb-4fee-4bd9-ad33-de39c39af6fc"
        },
        {
          "affected_range": "[7.0.0,7.0.99],[8.5.0,8.5.50],[9.0.0,9.0.30]",
          "affected_versions": "All versions starting from 7.0.0 up to 7.0.99, all versions starting from 8.5.0 up to 8.5.50, all versions starting from 9.0.0 up to 9.0.30",
          "cvss_v2": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-444",
            "CWE-937"
          ],
          "date": "2021-05-04",
          "description": "In Apache Tomcat M1 to to to 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.",
          "fixed_versions": [
            "7.0.100",
            "8.5.51",
            "9.0.31"
          ],
          "identifier": "CVE-2020-1935",
          "identifiers": [
            "CVE-2020-1935"
          ],
          "not_impacted": "All versions before 7.0.0, all versions after 7.0.99 before 8.5.0, all versions after 8.5.50 before 9.0.0, all versions after 9.0.30",
          "package_slug": "maven/org.apache.tomcat/tomcat-coyote",
          "pubdate": "2020-02-24",
          "solution": "Upgrade to versions 7.0.100, 8.5.51, 9.0.31 or above.",
          "title": "Inconsistent Interpretation of HTTP Requests (HTTP Request Smuggling)",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-1935",
            "https://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3E",
            "https://lists.apache.org/thread.html/r441c1f30a252bf14b07396286f6abd8089ce4240e91323211f1a2d75@%3Cusers.tomcat.apache.org%3E",
            "https://lists.apache.org/thread.html/r660cd379afe346f10d72c0eaa8459ccc95d83aff181671b7e9076919@%3Cusers.tomcat.apache.org%3E",
            "https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78@%3Ccommits.tomee.apache.org%3E",
            "https://lists.apache.org/thread.html/r80e9c8417c77d52c62809168b96912bda70ddf7748f19f8210f745b1@%3Cusers.tomcat.apache.org%3E",
            "https://lists.apache.org/thread.html/ra5dee390ad2d60307b8362505c059cd6a726de4d146d63dfce1e05e7@%3Cusers.tomcat.apache.org%3E",
            "https://lists.apache.org/thread.html/rc31cbabb46cdc58bbdd8519a8f64b6236b2635a3922bbeba0f0e3743@%3Ccommits.tomee.apache.org%3E",
            "https://lists.apache.org/thread.html/rd547be0c9d821b4b1000a694b8e58ef9f5e2d66db03a31dfe77c4b18@%3Cusers.tomcat.apache.org%3E"
          ],
          "uuid": "894341dd-3708-4af4-bc80-0080f3c6bb46"
        },
        {
          "affected_range": "[7.0.0,7.0.99],[8.5.0,8.5.50],[9.0.0,9.0.30]",
          "affected_versions": "All versions starting from 7.0.0 up to 7.0.99, all versions starting from 8.5.0 up to 8.5.50, all versions starting from 9.0.0 up to 9.0.30",
          "cvss_v2": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-444",
            "CWE-937"
          ],
          "date": "2021-05-04",
          "description": "In Apache Tomcat, 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.",
          "fixed_versions": [
            "7.0.100",
            "8.5.51",
            "9.0.31"
          ],
          "identifier": "CVE-2020-1935",
          "identifiers": [
            "CVE-2020-1935"
          ],
          "not_impacted": "All versions before 7.0.0, all versions after 7.0.99 before 8.5.0, all versions after 8.5.50 before 9.0.0, all versions after 9.0.30",
          "package_slug": "maven/org.apache.tomcat/tomcat-util",
          "pubdate": "2020-02-24",
          "solution": "Upgrade to versions 7.0.100, 8.5.51, 9.0.31 or above.",
          "title": "Inconsistent Interpretation of HTTP Requests (HTTP Request Smuggling)",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-1935",
            "https://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3E",
            "https://lists.apache.org/thread.html/r441c1f30a252bf14b07396286f6abd8089ce4240e91323211f1a2d75@%3Cusers.tomcat.apache.org%3E",
            "https://lists.apache.org/thread.html/r660cd379afe346f10d72c0eaa8459ccc95d83aff181671b7e9076919@%3Cusers.tomcat.apache.org%3E",
            "https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78@%3Ccommits.tomee.apache.org%3E",
            "https://lists.apache.org/thread.html/r80e9c8417c77d52c62809168b96912bda70ddf7748f19f8210f745b1@%3Cusers.tomcat.apache.org%3E",
            "https://lists.apache.org/thread.html/ra5dee390ad2d60307b8362505c059cd6a726de4d146d63dfce1e05e7@%3Cusers.tomcat.apache.org%3E",
            "https://lists.apache.org/thread.html/rc31cbabb46cdc58bbdd8519a8f64b6236b2635a3922bbeba0f0e3743@%3Ccommits.tomee.apache.org%3E",
            "https://lists.apache.org/thread.html/rd547be0c9d821b4b1000a694b8e58ef9f5e2d66db03a31dfe77c4b18@%3Cusers.tomcat.apache.org%3E"
          ],
          "uuid": "6086ec62-4cf0-43f7-b151-f357ac52dd27"
        },
        {
          "affected_range": "[7.0.0,7.0.99],[8.5.0,8.5.50],[9.0.0,9.0.30]",
          "affected_versions": "All versions starting from 7.0.0 up to 7.0.99, all versions starting from 8.5.0 up to 8.5.50, all versions starting from 9.0.0 up to 9.0.30",
          "cvss_v2": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-444",
            "CWE-937"
          ],
          "date": "2021-05-04",
          "description": "In Apache Tomcat, 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.",
          "fixed_versions": [
            "7.0.100",
            "8.5.51",
            "9.0.31"
          ],
          "identifier": "CVE-2020-1935",
          "identifiers": [
            "CVE-2020-1935"
          ],
          "not_impacted": "All versions before 7.0.0, all versions after 7.0.99 before 8.5.0, all versions after 8.5.50 before 9.0.0, all versions after 9.0.30",
          "package_slug": "maven/org.apache.tomcat/tomcat",
          "pubdate": "2020-02-24",
          "solution": "Upgrade to versions 7.0.100, 8.5.51, 9.0.31 or above.",
          "title": "Inconsistent Interpretation of HTTP Requests (HTTP Request Smuggling)",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-1935",
            "https://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3E",
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            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.2,
          "impactScore": 2.5
        }
      },
      "lastModifiedDate": "2021-05-04T19:19Z",
      "publishedDate": "2020-02-24T22:15Z"
    }
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.