rhsa-2021_0882
Vulnerability from csaf_redhat
Published
2021-03-16 15:17
Modified
2024-11-05 23:23
Summary
Red Hat Security Advisory: tomcat security update
Notes
Topic
An update for tomcat is now available for Red Hat Enterprise Linux 7.6 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.
Security Fix(es):
* tomcat: Session fixation when using FORM authentication (CVE-2019-17563)
* tomcat: Mishandling of Transfer-Encoding header allows for HTTP request smuggling (CVE-2020-1935)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
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"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1785711"
}
],
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{
"category": "description",
"text": "It was found that tomcat\u0027s FORM authentication allowed a very small period in which an attacker could possibly force a victim to use a valid user session, or Session Fixation. While practical exploit of this issue is deemed highly improbable, an abundance of caution merits it be considered a flaw. The highest threat from this vulnerability is to system availability, but also threatens data confidentiality and integrity.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "tomcat: Session fixation when using FORM authentication",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "All affected Red Hat products providing the affected component code should update their setups per the product fixes given.\n\nThe following Red Hat products are out of support scope for Low Impact flaws, and as such will not issue security fixes:\nRed Hat Enterprise Linux 5\nRed Hat Enterprise Linux 6\nRed Hat JBoss BPM Suite 6\nRed Hat JBoss BRMS 6",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"references": [
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"url": "https://access.redhat.com/security/cve/CVE-2019-17563"
},
{
"category": "external",
"summary": "RHBZ#1785711",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1785711"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2019-17563",
"url": "https://www.cve.org/CVERecord?id=CVE-2019-17563"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-17563",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-17563"
},
{
"category": "external",
"summary": "http://mail-archives.apache.org/mod_mbox/www-announce/201912.mbox/%3C21b7a375-7297-581b-1f8e-06622d36775b@apache.org%3E",
"url": "http://mail-archives.apache.org/mod_mbox/www-announce/201912.mbox/%3C21b7a375-7297-581b-1f8e-06622d36775b@apache.org%3E"
},
{
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"summary": "http://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.30",
"url": "http://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.30"
},
{
"category": "external",
"summary": "https://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.99",
"url": "https://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.99"
},
{
"category": "external",
"summary": "https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.50",
"url": "https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.50"
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"remediations": [
{
"category": "vendor_fix",
"date": "2021-03-16T15:17:38+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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{
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
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"threats": [
{
"category": "impact",
"details": "Low"
}
],
"title": "tomcat: Session fixation when using FORM authentication"
},
{
"acknowledgments": [
{
"names": [
"@ZeddYu"
],
"organization": "Apache Tomcat Security Team"
}
],
"cve": "CVE-2020-1935",
"cwe": {
"id": "CWE-444",
"name": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request/Response Smuggling\u0027)"
},
"discovery_date": "2019-12-25T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1806835"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Apache Tomcat. The HTTP header parsing code used an approach to end-of-line (EOL) parsing that allowed some invalid HTTP headers to be parsed as valid. This led to the 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. The highest threat with this vulnerability is system availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "tomcat: Mishandling of Transfer-Encoding header allows for HTTP request smuggling",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "OpenDaylight in Red Hat OpenStack 10 \u0026 13 was in technical preview status, because of this no fixes will be released for it.\n\nIn Red Hat Satellite 6, Candlepin is using Tomcat to provide a REST API, and has been found to be vulnerable to the flaw. However, it is currently believed that no useful attacks can be carried over.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2020-1935"
},
{
"category": "external",
"summary": "RHBZ#1806835",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1806835"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2020-1935",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-1935"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-1935",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-1935"
},
{
"category": "external",
"summary": "https://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.100",
"url": "https://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.100"
},
{
"category": "external",
"summary": "https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.51",
"url": "https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.51"
},
{
"category": "external",
"summary": "https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.31",
"url": "https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.31"
}
],
"release_date": "2020-02-24T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2021-03-16T15:17:38+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
"version": "3.1"
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"threats": [
{
"category": "impact",
"details": "Low"
}
],
"title": "tomcat: Mishandling of Transfer-Encoding header allows for HTTP request smuggling"
}
]
}
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- 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.