rhsa-2019_2950
Vulnerability from csaf_redhat
Published
2019-10-01 11:46
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
Red Hat JBoss Core Services Pack Apache Server 2.4.29 Service Pack 3 packages for RHEL 6, RHEL 7, Microsoft Windows and Oracle Solaris are now available.
Red Hat Product Security has rated this release 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 link(s) in the References section.
Details
This release adds the new Apache HTTP Server 2.4.29 Service Pack 3 packages that are part of the JBoss Core Services offering.
This release serves as a replacement for Red Hat JBoss Core Services Apache HTTP Server 2.4.29 SP2, and includes security and bug fixes. Refer to the Release Notes for information on the component upgrades included in this release.
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": "Red Hat JBoss Core Services Pack Apache Server 2.4.29 Service Pack 3 packages for RHEL 6, RHEL 7, Microsoft Windows and Oracle Solaris are now available.\n\nRed Hat Product Security has rated this release 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 link(s) in the References section.",
"title": "Topic"
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"text": "This release adds the new Apache HTTP Server 2.4.29 Service Pack 3 packages that are part of the JBoss Core Services offering.\n\nThis release serves as a replacement for Red Hat JBoss Core Services Apache HTTP Server 2.4.29 SP2, and includes security and bug fixes. Refer to the Release Notes for information on the component upgrades included in this release.\n\nSecurity Fix(es):\n\n* mod_http2: HTTP/2: 0-length headers leads to denial of service (CVE-2019-9516)\n\n* mod_http2: HTTP/2: request for large response leads to denial of service (CVE-2019-9517)\n\nBug Fix(es):\n\n* nghttp2: Rebase to 1.39.2\n\nFor 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.",
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"url": "https://access.redhat.com/documentation/en-us/red_hat_jboss_core_services/2.4.29/html/red_hat_jboss_core_services_apache_http_server_2.4.29_service_pack_3_release_notes/index"
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"summary": "1741864",
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"summary": "JBCS-828",
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"url": "https://security.access.redhat.com/data/csaf/v2/advisories/2019/rhsa-2019_2950.json"
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"title": "Red Hat Security Advisory: Red Hat JBoss Core Services Apache HTTP Server 2.4.29 SP3 security update",
"tracking": {
"current_release_date": "2024-11-05T21:27:38+00:00",
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"cve": "CVE-2019-9516",
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"name": "Uncontrolled Resource Consumption"
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"discovery_date": "2019-08-16T00:00:00+00:00",
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"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"
}
],
"product_status": {
"fixed": [
"Red Hat JBoss Core Services 1"
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"references": [
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"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2019-9516"
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"summary": "RHBZ#1741864",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1741864"
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{
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"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"
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"url": "https://kb.cert.org/vuls/id/605641/"
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{
"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/"
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"release_date": "2019-08-13T00:00:00+00:00",
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"date": "2019-10-01T11:46:03+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",
"product_ids": [
"Red Hat JBoss Core Services 1"
],
"restart_required": {
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"url": "https://access.redhat.com/errata/RHSA-2019:2950"
},
{
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"details": "Red Hat Quay 3.0 uses Nginx 1.12 from Red Hat Software Collections. It will be updated once a fixed is released for Software Collections. In the meantime users of Quay can disable http/2 support in Nginx by following these instructions:\n\n1. Copy the Nginx configuration from the quay container to the host\n$ docker cp 3aadf1421ba3:/quay-registry/conf/nginx/ /mnt/quay/nginx\n\n2. Edit the Nginx configuration, removing http/2 support\n$ sed -i \u0027s/http2 //g\u0027 /mnt/quay/nginx/nginx.conf\n\n3. Restart Nginx with the new configuration mounted into the container, eg:\n$ docker run --restart=always -p 443:8443 -p 80:8080 --sysctl net.core.somaxconn=4096 -v /mnt/quay/config:/conf/stack:Z -v /mnt/quay/storage:/datastorage -v /mnt/quay/nginx:/quay-registry/config/nginx:Z -d quay.io/redhat/quay:v3.0.3",
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"scores": [
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"cvss_v3": {
"attackComplexity": "LOW",
"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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"products": [
"Red Hat JBoss Core Services 1"
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}
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"threats": [
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"details": "Important"
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],
"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"
}
],
"product_status": {
"fixed": [
"Red Hat JBoss Core Services 1"
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"references": [
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"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": "2019-10-01T11:46:03+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",
"product_ids": [
"Red Hat JBoss Core Services 1"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2019:2950"
},
{
"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",
"product_ids": [
"Red Hat JBoss Core Services 1"
]
}
],
"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"
},
"products": [
"Red Hat JBoss Core Services 1"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "HTTP/2: request for large response leads to denial of service"
}
]
}
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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.