rhsa-2019_2946
Vulnerability from csaf_redhat
Published
2019-10-01 13:40
Modified
2024-11-05 21:27
Summary
Red Hat Security Advisory: Red Hat JBoss Core Services Apache HTTP Server 2.4.29 SP3 security update
Notes
Topic
An update is now available for JBoss Core Services on RHEL 6 and RHEL 7.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE links in the References section.
Details
Red Hat JBoss Core Services is a set of supplementary software for Red Hat JBoss middleware products. This software, such as Apache HTTP Server, is common to multiple JBoss middleware products, and is packaged under Red Hat JBoss Core Services to allow for faster distribution of updates, and for a more consistent update experience.
This release of Red Hat JBoss Core Services Apache HTTP Server 2.4.29 Service Pack 3 serves as an update to Red Hat JBoss Core Services Apache HTTP Server 2.4.29, and includes bug fixes for CVEs which are linked in the References section.
Security Fix(es):
* mod_http2: HTTP/2: 0-length headers leads to denial of service (CVE-2019-9516)
* mod_http2: HTTP/2: request for large response leads to denial of service (CVE-2019-9517)
Bug Fix(es):
* nghttp2: Rebase to 1.39.2
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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"text": "HTTP/2: large amount of data requests leads to denial of service",
"title": "Vulnerability summary"
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"text": "There are no mitigations available for nghttp2 and nodejs. Both packages will be updated once the available fixes are released for Red Hat Enterprise Linux and Red Hat Software Collections.\n\nThe nodejs RPM shipped in OpenShift Container Platform 3.9 and 3.10 is not affected by this flaw as it does not contain the vulnerable code.",
"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.",
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.0"
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{
"category": "impact",
"details": "Important"
}
],
"title": "HTTP/2: large amount of data requests leads to denial of service"
},
{
"acknowledgments": [
{
"names": [
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]
}
],
"cve": "CVE-2019-9513",
"cwe": {
"id": "CWE-400",
"name": "Uncontrolled Resource Consumption"
},
"discovery_date": "2019-08-01T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1735741"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in HTTP/2. An attacker, using PRIORITY frames to flood the system, could cause excessive CPU usage and starvation of other clients. The largest threat from this vulnerability is to system availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "HTTP/2: flood using PRIORITY frames results in excessive resource consumption",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This flaw has no available mitigation for packages nghttp2 and nodejs. Both packages will be updated once the available fixes are released for Red Hat Enterprise Linux and Red Hat Software Collections.\n\nThe nodejs RPM shipped in OpenShift Container Platform 3.9 and 3.10 is not affected by this flaw as it does not contain the vulnerable code.",
"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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"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2019-9513"
},
{
"category": "external",
"summary": "RHBZ#1735741",
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{
"category": "external",
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"url": "https://www.cve.org/CVERecord?id=CVE-2019-9513"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-9513",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-9513"
},
{
"category": "external",
"summary": "https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md",
"url": "https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md"
},
{
"category": "external",
"summary": "https://nghttp2.org/blog/2019/08/19/nghttp2-v1-39-2/",
"url": "https://nghttp2.org/blog/2019/08/19/nghttp2-v1-39-2/"
},
{
"category": "external",
"summary": "https://nodejs.org/en/blog/vulnerability/aug-2019-security-releases/",
"url": "https://nodejs.org/en/blog/vulnerability/aug-2019-security-releases/"
},
{
"category": "external",
"summary": "https://www.nginx.com/blog/nginx-updates-mitigate-august-2019-http-2-vulnerabilities/",
"url": "https://www.nginx.com/blog/nginx-updates-mitigate-august-2019-http-2-vulnerabilities/"
}
],
"release_date": "2019-08-13T17:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2019-10-01T13:40:45+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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"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2019:2946"
},
{
"category": "workaround",
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{
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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{
"category": "impact",
"details": "Important"
}
],
"title": "HTTP/2: flood using PRIORITY frames results in excessive resource consumption"
},
{
"cve": "CVE-2019-9516",
"cwe": {
"id": "CWE-400",
"name": "Uncontrolled Resource Consumption"
},
"discovery_date": "2019-08-16T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1741864"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in HTTP/2. An attacker, sending a stream of header with a 0-length header name and a 0-length header value, could cause some implementations to allocate memory for these headers and keep the allocations alive until the session dies. The can consume excess memory, potentially leading to a denial of service. The highest threat from this vulnerability is to system availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "HTTP/2: 0-length headers lead to denial of service",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This flaw has no available mitigation for nodejs package. It will be updated once the available fixes are released for Red Hat Enterprise Linux and Red Hat Software Collections.\n\nThe nodejs RPM shipped in OpenShift Container Platform 3.9 and 3.10 is not affected by this flaw as it does not contain the vulnerable code.",
"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": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2019-9516"
},
{
"category": "external",
"summary": "RHBZ#1741864",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1741864"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2019-9516",
"url": "https://www.cve.org/CVERecord?id=CVE-2019-9516"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-9516",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-9516"
},
{
"category": "external",
"summary": "https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md",
"url": "https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md"
},
{
"category": "external",
"summary": "https://github.com/nghttp2/nghttp2/issues/1382#",
"url": "https://github.com/nghttp2/nghttp2/issues/1382#"
},
{
"category": "external",
"summary": "https://kb.cert.org/vuls/id/605641/",
"url": "https://kb.cert.org/vuls/id/605641/"
},
{
"category": "external",
"summary": "https://nodejs.org/en/blog/vulnerability/aug-2019-security-releases/",
"url": "https://nodejs.org/en/blog/vulnerability/aug-2019-security-releases/"
},
{
"category": "external",
"summary": "https://www.nginx.com/blog/nginx-updates-mitigate-august-2019-http-2-vulnerabilities/",
"url": "https://www.nginx.com/blog/nginx-updates-mitigate-august-2019-http-2-vulnerabilities/"
}
],
"release_date": "2019-08-13T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2019-10-01T13:40:45+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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},
"url": "https://access.redhat.com/errata/RHSA-2019:2946"
},
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"category": "workaround",
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.0"
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{
"category": "impact",
"details": "Important"
}
],
"title": "HTTP/2: 0-length headers lead to denial of service"
},
{
"cve": "CVE-2019-9517",
"cwe": {
"id": "CWE-400",
"name": "Uncontrolled Resource Consumption"
},
"discovery_date": "2019-08-16T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1741868"
}
],
"notes": [
{
"category": "description",
"text": "A vulnerability was found in HTTP/2. An attacker can open a HTTP/2 window so the peer can send without constraint. The TCP window remains closed so the peer cannot write the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the server\u0027s queue is setup, the responses can consume excess memory, CPU, or both, potentially leading to a denial of service. The highest threat from this vulnerability is to system availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "HTTP/2: request for large response leads to denial of service",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "The package httpd versions as shipped with Red Hat Enterprise Linux 5, 6 and 7 are not affected by this issue as HTTP/2 support is not provided.\nThis flaw has no available mitigation for nodejs package. It will be updated once the available fixes are released for Red Hat Enterprise Linux and Red Hat Software Collections.\n\nThe nodejs RPM shipped in OpenShift Container Platform 3.9 and 3.10 is not affected by this flaw as it does not contain the vulnerable code.",
"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": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2019-9517"
},
{
"category": "external",
"summary": "RHBZ#1741868",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1741868"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2019-9517",
"url": "https://www.cve.org/CVERecord?id=CVE-2019-9517"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-9517",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-9517"
},
{
"category": "external",
"summary": "https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md",
"url": "https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md"
},
{
"category": "external",
"summary": "https://kb.cert.org/vuls/id/605641/",
"url": "https://kb.cert.org/vuls/id/605641/"
},
{
"category": "external",
"summary": "https://nodejs.org/en/blog/vulnerability/aug-2019-security-releases/",
"url": "https://nodejs.org/en/blog/vulnerability/aug-2019-security-releases/"
}
],
"release_date": "2019-08-13T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2019-10-01T13:40:45+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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"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2019:2946"
},
{
"category": "workaround",
"details": "The httpd version shipped with Red Hat Enterprise Linux 8 provides HTTP/2 support through mod_http2 package. While mod_http2 package is not updated, users can disable HTTP/2 support as mitigation action by executing the following steps:\n\n1. Stop httpd service:\n$ systemctl stop httpd\n\n2. Remove http/2 protocol support from configuration files:\n$ sed -i \u0027s/\\(h2\\)\\|\\(h2c\\)//g\u0027 \u003chttpd_config_file\u003e\n\n3. Validate configuration files to make sure all syntax is valid:\n$ apachectl configtest\n\n4. Restart httpd service:\n$ systemctl start httpd",
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"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.0"
},
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],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "HTTP/2: request for large response leads to denial of service"
}
]
}
Loading...
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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.