rhsa-2023_3445
Vulnerability from csaf_redhat
Published
2023-06-05 18:55
Modified
2024-09-18 05:00
Summary
Red Hat Security Advisory: Red Hat OpenStack Platform 16.2 (etcd) security update
Notes
Topic
An update for etcd is now available for Red Hat OpenStack Platform 16.2
(Train).
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 link(s) in the References section.
Details
A highly-available key value store for shared configuration
Security Fix(es):
* Information discosure via debug function (CVE-2021-28235)
* html/template: improper handling of JavaScript whitespace
(CVE-2023-24540)
* golang.org/x/net/http2: avoid quadratic complexity in HPACK decoding
(CVE-2022-41723)
* crypto/tls: large handshake records may cause panics (CVE-2022-41724)
* net/http mime/multipart: denial of service from excessive resource
consumption (CVE-2022-41725)
* net/http net/textproto: denial of service from excessive memory
allocation (CVE-2023-24534)
* net/http net/textproto mime/multipart: denial of service from excessive
resource consumption (CVE-2023-24536)
* go/parser: Infinite loop in parsing (CVE-2023-24537)
* html/template: backticks not treated as string delimiters
(CVE-2023-24538)
* html/template: improper sanitization of CSS values (CVE-2023-24539)
* html/template: improper handling of empty HTML attributes
(CVE-2023-29400)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page 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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"vulnerabilities": [
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"name": "Improper Authentication"
},
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"ids": [
{
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"text": "2184441"
}
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"notes": [
{
"category": "description",
"text": "A flaw was found in etcd, where etc-io could allow a remote attacker to gain elevated privileges on the system caused by a vulnerability in the debug function. By sending a specially crafted request, an attacker can gain elevated privileges.",
"title": "Vulnerability description"
},
{
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"text": "etcd: Information discosure via debug function",
"title": "Vulnerability summary"
},
{
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"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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}
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"release_date": "2023-04-04T00:00:00+00:00",
"remediations": [
{
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"details": "For details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
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"scores": [
{
"cvss_v3": {
"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"
},
"products": [
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"threats": [
{
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"details": "Important"
}
],
"title": "etcd: Information discosure via debug function"
},
{
"acknowledgments": [
{
"names": [
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],
"organization": "Catena Cyber"
}
],
"cve": "CVE-2022-41723",
"cwe": {
"id": "CWE-400",
"name": "Uncontrolled Resource Consumption"
},
"discovery_date": "2023-03-14T00:00:00+00:00",
"ids": [
{
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"text": "2178358"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in golang. A maliciously crafted HTTP/2 stream could cause excessive CPU consumption in the HPACK decoder, sufficient to cause a denial of service from a small number of requests.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang.org/x/net/http2: avoid quadratic complexity in HPACK decoding",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Within OpenShift Container Platform, the maximum impact of this vulnerability is a denial of service against an individual container so the impact could not cascade across the entire infrastructure, this vulnerability is rated Moderate impact.",
"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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},
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{
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{
"category": "external",
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"title": "Vulnerability description"
},
{
"category": "summary",
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"title": "Vulnerability summary"
},
{
"category": "other",
"text": "The opportunity for a denial of service is limited to the golang runtime. In the case of the OpenShift Container Platform, this would be restricted within each individual container. There are multiple layers of guide rails (Golang\u2019s Garbage Collector; OpenShift\u2019s resource constraints imposed at the container and cluster levels) which would require a malicious user to continue submitting attacks for there to be any enduring impact. They would also need access to external server resources to be able to send a massive volume of requests to cause a significant impact on server operations.",
"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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{
"category": "other",
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"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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{
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},
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"ids": [
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"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang: net/http, net/textproto: denial of service from excessive memory allocation",
"title": "Vulnerability summary"
},
{
"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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"title": "golang: net/http, net/textproto: denial of service from excessive memory allocation"
},
{
"cve": "CVE-2023-24536",
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},
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"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2184482"
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{
"category": "description",
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"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang: net/http, net/textproto, mime/multipart: denial of service from excessive resource consumption",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "For Red Hat Enterprise Linux,\n\n* Conmon uses Go in unit testing, but not functionally in the package. Go is used only in test files, hence, not in the actual code, thus, conmon is not-affected.\n* The CVE refers to multipart form parsing routine mime/multipart.Reader.ReadForm, which is not used in Grafana, hence it is not-affected.\n* Butane does not parse multipart forms, hence, it is also not-affected.",
"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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"scope": "UNCHANGED",
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"title": "golang: net/http, net/textproto, mime/multipart: denial of service from excessive resource consumption"
},
{
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"id": "CWE-835",
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},
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"ids": [
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{
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"text": "A flaw was found in Golang Go, where it is vulnerable to a denial of service caused by an infinite loop due to integer overflow when calling any of the Parse functions. By sending a specially crafted input, a remote attacker can cause a denial of service.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang: go/parser: Infinite loop in parsing",
"title": "Vulnerability summary"
},
{
"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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"id": "CWE-94",
"name": "Improper Control of Generation of Code (\u0027Code Injection\u0027)"
},
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"ids": [
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{
"category": "description",
"text": "A flaw was found in Golang Go. This flaw allows a remote attacker to execute arbitrary code on the system, caused by not properly considering backticks (`) as Javascript string delimiters. By sending a specially crafted request, an attacker execute arbitrary code on the system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang: html/template: backticks not treated as string delimiters",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "The described issue involving Go templates and JavaScript template literals poses a moderate severity rather than an important one due to several mitigating factors. Firstly, the vulnerability requires specific conditions to be met: the presence of Go templates within JavaScript template literals. This limits the scope of affected codebases, reducing the likelihood of exploitation. Additionally, the decision to disallow such interactions in future releases of Go indicates a proactive approach to addressing the issue. Furthermore, the affected packages or components within Red Hat Enterprise Linux, such as Conmon, Grafana, and the RHC package, have been assessed and determined not to be impacted due to their specific usage patterns. So the limited scope of affected systems and the absence of exploitation vectors in specific components within Red Hat Enterprise Linux contribute to categorizing the severity of the issue as moderate.\n\nFor Red Hat Enterprise Linux,\n\n* Conmon uses go in unit testing, but not functionally in the package. Go is used only in test files, hence, not in the actual code, thus, conmon is not affected.\n* The Go templates in Grafana do not contain any javascript. Thus, it is not affected.\n* The rhc package do not make use of html/template. Hence, it is also not affected.",
"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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"title": "golang: html/template: backticks not treated as string delimiters"
},
{
"acknowledgments": [
{
"names": [
"Juho Nurminen"
],
"organization": "Mattermost"
}
],
"cve": "CVE-2023-24539",
"cwe": {
"id": "CWE-176",
"name": "Improper Handling of Unicode Encoding"
},
"discovery_date": "2023-05-07T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2196026"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in golang where angle brackets (\u003c\u003e) were not considered dangerous characters when inserted into CSS contexts. Templates containing multiple actions separated by a \u0027/\u0027 character could result in the CSS context unexpectedly closing, allowing for the injection of unexpected HMTL if executed with untrusted input.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang: html/template: improper sanitization of CSS values",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "For Red Hat Enterprise Linux,\n\n* Conmon uses go in unit testing, but not functionally in the package. Go is used only in test files, not in the actual code. Thus, conmon is not affected.\n* The Go templates in Grafana do not contain any javascript. Thus, it is not affected.\n* Ignition does not make use of html/template.\n\nIn Red Hat Advanced Cluster Management for Kubernetes (RHACM), the affected containers are behind OpenShift OAuth authentication. This restricts access to the vulnerable golang html/templates to authenticated users only, therefore, the impact is low.",
"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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}
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"title": "golang: html/template: improper sanitization of CSS values"
},
{
"acknowledgments": [
{
"names": [
"Juho Nurminen"
],
"organization": "Mattermost"
}
],
"cve": "CVE-2023-24540",
"cwe": {
"id": "CWE-176",
"name": "Improper Handling of Unicode Encoding"
},
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"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2196027"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in golang, where not all valid JavaScript white-space characters were considered white space. Due to this issue, templates containing white-space characters outside of the character set \"\\t\\n\\f\\r\\u0020\\u2028\\u2029\" in JavaScript contexts that also contain actions may not be properly sanitized during execution.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang: html/template: improper handling of JavaScript whitespace",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "For Red Hat Enterprise Linux,\n* Conmon uses go in unit testing, but not functionally in the package. Go is used only in test files, hence, not in the actual code, thus, conmon is not affected.\n* The Go templates in Grafana do not contain any javascript. Thus, it is not affected.\n* Ignition does not make use of html/template.\n\nIn Red Hat Advanced Cluster Management for Kubernetes (RHACM) the affected containers are behind OpenShift OAuth authentication. This restricts access to the vulnerable golang html/templates to authenticated users only, therefore the impact is low.",
"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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"url": "https://access.redhat.com/security/cve/CVE-2023-24540"
},
{
"category": "external",
"summary": "RHBZ#2196027",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2196027"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-24540",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-24540"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-24540",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-24540"
},
{
"category": "external",
"summary": "https://go.dev/issue/59721",
"url": "https://go.dev/issue/59721"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/MEb0UyuSMsU",
"url": "https://groups.google.com/g/golang-announce/c/MEb0UyuSMsU"
}
],
"release_date": "2023-04-20T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "For details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2023:3445"
},
{
"category": "workaround",
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],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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"category": "impact",
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}
],
"title": "golang: html/template: improper handling of JavaScript whitespace"
},
{
"acknowledgments": [
{
"names": [
"Juho Nurminen"
],
"organization": "Mattermost"
}
],
"cve": "CVE-2023-29400",
"cwe": {
"id": "CWE-176",
"name": "Improper Handling of Unicode Encoding"
},
"discovery_date": "2023-05-07T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2196029"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in golang. Templates containing actions in unquoted HTML attributes, for example, \"attr={{.}}\") executed with empty input, could result in output that has unexpected results when parsed due to HTML normalization rules. This issue may allow the injection of arbitrary attributes into tags.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang: html/template: improper handling of empty HTML attributes",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "For Red Hat Enterprise Linux,\n\n* Conmon uses go in unit testing, but not functionally in the package. Go is used only in test files, not in the actual code. Thus, conmon is not affected.\n* The Go templates in Grafana do not contain any javascript. Thus, it is not affected.\n* Ignition does not make use of html/template.\n\nIn OpenShift Container Platform and Red Hat Advanced Cluster Management for Kubernetes (RHACM), the affected containers are behind OAuth authentication. This restricts access to the vulnerable golang html/templates to authenticated users, reducing the impact to low.",
"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": [
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"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2023-29400"
},
{
"category": "external",
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2196029"
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"url": "https://www.cve.org/CVERecord?id=CVE-2023-29400"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-29400",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-29400"
},
{
"category": "external",
"summary": "https://go.dev/issue/59722",
"url": "https://go.dev/issue/59722"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/MEb0UyuSMsU",
"url": "https://groups.google.com/g/golang-announce/c/MEb0UyuSMsU"
}
],
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},
{
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],
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{
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"attackComplexity": "LOW",
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"scope": "UNCHANGED",
"userInteraction": "NONE",
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"version": "3.1"
},
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"threats": [
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"category": "impact",
"details": "Moderate"
}
],
"title": "golang: html/template: improper handling of empty HTML attributes"
}
]
}
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