gsd-2020-1938
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to Apache Tomcat. Tomcat treats AJP connections as having higher trust than, for example, a similar HTTP connection. If such connections are available to an attacker, they can be exploited in ways that may be surprising. In Apache Tomcat 9.0.0.M1 to 9.0.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99, Tomcat shipped with an AJP Connector enabled by default that listened on all configured IP addresses. It was expected (and recommended in the security guide) that this Connector would be disabled if not required. This vulnerability report identified a mechanism that allowed: - returning arbitrary files from anywhere in the web application - processing any file in the web application as a JSP Further, if the web application allowed file upload and stored those files within the web application (or the attacker was able to control the content of the web application by some other means) then this, along with the ability to process a file as a JSP, made remote code execution possible. It is important to note that mitigation is only required if an AJP port is accessible to untrusted users. Users wishing to take a defence-in-depth approach and block the vector that permits returning arbitrary files and execution as JSP may upgrade to Apache Tomcat 9.0.31, 8.5.51 or 7.0.100 or later. A number of changes were made to the default AJP Connector configuration in 9.0.31 to harden the default configuration. It is likely that users upgrading to 9.0.31, 8.5.51 or 7.0.100 or later will need to make small changes to their configurations.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-1938",
"description": "When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to Apache Tomcat. Tomcat treats AJP connections as having higher trust than, for example, a similar HTTP connection. If such connections are available to an attacker, they can be exploited in ways that may be surprising. In Apache Tomcat 9.0.0.M1 to 9.0.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99, Tomcat shipped with an AJP Connector enabled by default that listened on all configured IP addresses. It was expected (and recommended in the security guide) that this Connector would be disabled if not required. This vulnerability report identified a mechanism that allowed: - returning arbitrary files from anywhere in the web application - processing any file in the web application as a JSP Further, if the web application allowed file upload and stored those files within the web application (or the attacker was able to control the content of the web application by some other means) then this, along with the ability to process a file as a JSP, made remote code execution possible. It is important to note that mitigation is only required if an AJP port is accessible to untrusted users. Users wishing to take a defence-in-depth approach and block the vector that permits returning arbitrary files and execution as JSP may upgrade to Apache Tomcat 9.0.31, 8.5.51 or 7.0.100 or later. A number of changes were made to the default AJP Connector configuration in 9.0.31 to harden the default configuration. It is likely that users upgrading to 9.0.31, 8.5.51 or 7.0.100 or later will need to make small changes to their configurations.",
"id": "GSD-2020-1938",
"references": [
"https://www.suse.com/security/cve/CVE-2020-1938.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-2020:2840",
"https://access.redhat.com/errata/RHSA-2020:2783",
"https://access.redhat.com/errata/RHSA-2020:2781",
"https://access.redhat.com/errata/RHSA-2020:2780",
"https://access.redhat.com/errata/RHSA-2020:2779",
"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://access.redhat.com/errata/RHSA-2020:1479",
"https://access.redhat.com/errata/RHSA-2020:1478",
"https://access.redhat.com/errata/RHSA-2020:0912",
"https://access.redhat.com/errata/RHSA-2020:0861",
"https://access.redhat.com/errata/RHSA-2020:0860",
"https://access.redhat.com/errata/RHSA-2020:0855",
"https://advisories.mageia.org/CVE-2020-1938.html",
"https://alas.aws.amazon.com/cve/html/CVE-2020-1938.html",
"https://linux.oracle.com/cve/CVE-2020-1938.html",
"https://access.redhat.com/errata/RHSA-2020:4847"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2020-1938"
],
"details": "When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to Apache Tomcat. Tomcat treats AJP connections as having higher trust than, for example, a similar HTTP connection. If such connections are available to an attacker, they can be exploited in ways that may be surprising. In Apache Tomcat 9.0.0.M1 to 9.0.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99, Tomcat shipped with an AJP Connector enabled by default that listened on all configured IP addresses. It was expected (and recommended in the security guide) that this Connector would be disabled if not required. This vulnerability report identified a mechanism that allowed: - returning arbitrary files from anywhere in the web application - processing any file in the web application as a JSP Further, if the web application allowed file upload and stored those files within the web application (or the attacker was able to control the content of the web application by some other means) then this, along with the ability to process a file as a JSP, made remote code execution possible. It is important to note that mitigation is only required if an AJP port is accessible to untrusted users. Users wishing to take a defence-in-depth approach and block the vector that permits returning arbitrary files and execution as JSP may upgrade to Apache Tomcat 9.0.31, 8.5.51 or 7.0.100 or later. A number of changes were made to the default AJP Connector configuration in 9.0.31 to harden the default configuration. It is likely that users upgrading to 9.0.31, 8.5.51 or 7.0.100 or later will need to make small changes to their configurations.",
"id": "GSD-2020-1938",
"modified": "2023-12-13T01:21:57.844744Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
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"cveID": "CVE-2020-1938",
"dateAdded": "2022-03-03",
"dueDate": "2022-03-17",
"product": "Tomcat",
"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "Apache Tomcat treats Apache JServ Protocol (AJP) connections as having higher trust than, for example, a similar HTTP connection. If such connections are available to an attacker, they can be exploited.",
"vendorProject": "Apache",
"vulnerabilityName": "Apache Tomcat Improper Privilege Management Vulnerability"
},
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "security@apache.org",
"ID": "CVE-2020-1938",
"STATE": "PUBLIC"
},
"affects": {
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{
"product": {
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{
"product_name": "Apache Tomcat",
"version": {
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{
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},
{
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},
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}
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"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to Apache Tomcat. Tomcat treats AJP connections as having higher trust than, for example, a similar HTTP connection. If such connections are available to an attacker, they can be exploited in ways that may be surprising. In Apache Tomcat 9.0.0.M1 to 9.0.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99, Tomcat shipped with an AJP Connector enabled by default that listened on all configured IP addresses. It was expected (and recommended in the security guide) that this Connector would be disabled if not required. This vulnerability report identified a mechanism that allowed: - returning arbitrary files from anywhere in the web application - processing any file in the web application as a JSP Further, if the web application allowed file upload and stored those files within the web application (or the attacker was able to control the content of the web application by some other means) then this, along with the ability to process a file as a JSP, made remote code execution possible. It is important to note that mitigation is only required if an AJP port is accessible to untrusted users. Users wishing to take a defence-in-depth approach and block the vector that permits returning arbitrary files and execution as JSP may upgrade to Apache Tomcat 9.0.31, 8.5.51 or 7.0.100 or later. A number of changes were made to the default AJP Connector configuration in 9.0.31 to harden the default configuration. It is likely that users upgrading to 9.0.31, 8.5.51 or 7.0.100 or later will need to make small changes to their configurations."
}
]
},
"problemtype": {
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"description": [
{
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"value": "AJP Request Injection leading to possible Remote Code Execution"
}
]
}
]
},
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"name": "[tomee-commits] 20201127 [jira] [Updated] (TOMEE-2789) TomEE plus(7.0.7) is affected by CVE-2020-1938(BDSA-2020-0339) vulnerability.",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/r47caef01f663106c2bb81d116b8380d62beac9e543dd3f3bc2c2beda@%3Ccommits.tomee.apache.org%3E"
},
{
"name": "https://www.oracle.com/security-alerts/cpujan2021.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpujan2021.html"
},
{
"name": "[announce] 20210125 Apache Software Foundation Security Report: 2020",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/r90890afea72a9571d666820b2fe5942a0a5f86be406fa31da3dd0922@%3Cannounce.apache.org%3E"
},
{
"name": "[announce] 20210223 Re: Apache Software Foundation Security Report: 2020",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/r1125f3044a0946d1e7e6f125a6170b58d413ebd4a95157e4608041c7@%3Cannounce.apache.org%3E"
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"date": "2021-07-28",
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"pubdate": "2020-06-15",
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"title": "Improper Privilege Management",
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"https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html",
"https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html",
"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2XFLQB3O5QVP4ZBIPVIXBEZV7F2R7ZMS/",
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"http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00002.html",
"http://support.blackberry.com/kb/articleDetail?articleNumber=000062739",
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"name": "[tomee-commits] 20201127 [jira] [Resolved] (TOMEE-2789) TomEE plus(7.0.7) is affected by CVE-2020-1938(BDSA-2020-0339) vulnerability.",
"refsource": "MLIST",
"tags": [
"Mailing List",
"Vendor Advisory"
],
"url": "https://lists.apache.org/thread.html/r57f5e4ced436ace518a9e222fabe27fb785f09f5bf974814cc48ca97@%3Ccommits.tomee.apache.org%3E"
},
{
"name": "https://www.oracle.com/security-alerts/cpujan2021.html",
"refsource": "MISC",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://www.oracle.com/security-alerts/cpujan2021.html"
},
{
"name": "[announce] 20210125 Apache Software Foundation Security Report: 2020",
"refsource": "MLIST",
"tags": [
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],
"url": "https://lists.apache.org/thread.html/r90890afea72a9571d666820b2fe5942a0a5f86be406fa31da3dd0922@%3Cannounce.apache.org%3E"
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{
"name": "[announce] 20210223 Re: Apache Software Foundation Security Report: 2020",
"refsource": "MLIST",
"tags": [
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"url": "https://lists.apache.org/thread.html/r1125f3044a0946d1e7e6f125a6170b58d413ebd4a95157e4608041c7@%3Cannounce.apache.org%3E"
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},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 7.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "HIGH",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9
}
},
"lastModifiedDate": "2022-04-29T13:24Z",
"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.