rhsa-2020_5493
Vulnerability from csaf_redhat
Published
2020-12-15 17:12
Modified
2024-11-05 23:06
Summary
Red Hat Security Advisory: go-toolset:rhel8 security update
Notes
Topic
An update for the go-toolset:rhel8 module is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Moderate. 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
Go Toolset provides the Go programming language tools and libraries. Go is alternatively known as golang.
Security Fix(es):
* golang: default Content-Type setting in net/http/cgi and net/http/fcgi could cause XSS (CVE-2020-24553)
* golang: math/big: panic during recursive division of very large numbers (CVE-2020-28362)
* golang: malicious symbol names can lead to code execution at build time (CVE-2020-28366)
* golang: improper validation of cgo flags can lead to code execution at build time (CVE-2020-28367)
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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"name": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)"
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"category": "description",
"text": "A flaw was found in the Go standard library packages before upstream versions 1.15 and 1.14.8. Both the net/http/cgi and net/http/fcgi packages use a default Content-Type response header value of \"text/html\", rather than \"text/plain\". This flaw allows an attacker to exploit this issue in applications using these packages by uploading crafted files, allowing a Cross-site Scripting attack (XSS). The highest threat from this vulnerability is to confidentiality and integrity.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang: default Content-Type setting in net/http/cgi and net/http/fcgi could cause XSS",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Multiple components in the Red Hat OpenShift Container Platform are built with Go and use net/http, however, none include the specific vulnerable packages net/http/cgi and net/http/fcgi. Red Hat OpenShift Container Platform is not affected by this flaw.",
"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: default Content-Type setting in net/http/cgi and net/http/fcgi could cause XSS"
},
{
"cve": "CVE-2020-28362",
"cwe": {
"id": "CWE-295",
"name": "Improper Certificate Validation"
},
"discovery_date": "2020-11-12T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1897635"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the math/big package of Go\u0027s standard library that causes a denial of service. Applications written in Go that use math/big via cryptographic packages, including crypto/rsa and crypto/x509, are vulnerable and can potentially cause panic via a crafted certificate chain. The highest threat from this vulnerability is to system availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang: math/big: panic during recursive division of very large numbers",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "OpenShift ServiceMesh (OSSM) 1.1 is Out Of Support Scope (OOSS) for Moderate and Low impact vulnerabilities because it is now in the Maintenance Phase of the support.\nOpenshift Virtualization 1 (formerly Container Native Virtualization) is Out Of Support Scope (OOSS) for Moderate and Low impact vulnerabilities.\n\nRed Hat Gluster Storage 3 shipped multi-cloud-object-gateway-cli and noobaa-operator container as a technical preview and is not currently planned to be addressed in future updates.\n\nOpenShift Container Platform (OCP) 4.5 and earlier are built with Go versions earlier than 1.14, which are not affected by this vulnerability. OCP 4.6 is built with Go 1.15 and is 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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{
"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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
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],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "golang: math/big: panic during recursive division of very large numbers"
},
{
"cve": "CVE-2020-28366",
"cwe": {
"id": "CWE-20",
"name": "Improper Input Validation"
},
"discovery_date": "2020-11-12T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1897643"
}
],
"notes": [
{
"category": "description",
"text": "An input validation vulnerability was found in Go. From a generated go file (from the cgo tool), it is possible to modify symbols within that object file and specify code. This flaw allows an attacker to create a repository that includes malicious pre-built object files that could execute arbitrary code when downloaded and run via `go get` or `go build` while building a Go project. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang: malicious symbol names can lead to code execution at build time",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "While OpenShift Container Platform (OCP), Red Hat OpenShift Jaeger (RHOSJ), OpenShift Service Mesh (OSSM), and OpenShift Virtualization all contain RPMs and containers which are compiled with a vulnerable version of Go, the vulnerability is specific to the building of Go code itself. Using `go get` or `go build` and as such, the relevant components have been marked as not affected.\n\nAdditionally, only the main RPMs and containers for OCP, RHOSJ, OSSM, and OpenShift Virtualization are represented due to the large volume of not affected components.\n\nRed Hat Ceph Storage 3 ships the vulnerable version of go, and an attacker building go code on RHCS 3 could potentially exploit this vulnerability.",
"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": "external",
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1897643"
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{
"category": "external",
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"url": "https://www.cve.org/CVERecord?id=CVE-2020-28366"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-28366",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-28366"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/NpBGTTmKzpM/m/fLguyiM2CAAJ",
"url": "https://groups.google.com/g/golang-announce/c/NpBGTTmKzpM/m/fLguyiM2CAAJ"
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],
"release_date": "2020-11-12T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2020-12-15T17:12:24+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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{
"cvss_v3": {
"attackComplexity": "HIGH",
"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": "Moderate"
}
],
"title": "golang: malicious symbol names can lead to code execution at build time"
},
{
"cve": "CVE-2020-28367",
"cwe": {
"id": "CWE-20",
"name": "Improper Input Validation"
},
"discovery_date": "2020-11-12T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1897646"
}
],
"notes": [
{
"category": "description",
"text": "An input validation vulnerability was found in Go. If cgo is specified in a Go file, it is possible to bypass the validation of arguments to the gcc compiler. This flaw allows an attacker to create a malicious repository that can execute arbitrary code when downloaded and run via `go get` or `go build` while building a Go project. The highest threat from this vulnerability is to confidentiality and integrity as well as system availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang: improper validation of cgo flags can lead to code execution at build time",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "While the OpenShift Container Platform (OCP), Red Hat OpenShift Jaeger (RHOSJ), OpenShift Service Mesh (OSSM), and OpenShift Virtualization all contain RPMs and containers that are compiled with a vulnerable version of Go, the vulnerability is specific to the building of the Go code itself. Using `go get` or `go build` and as such, the relevant components have been marked as not affected.\n\nAdditionally, only the main RPMs and containers for OCP, RHOSJ, OSSM, and OpenShift Virtualization are represented due to the large volume of not affected components.\n\nRed Hat Ceph Storage 3 ships the vulnerable version of go, and an attacker building go code on RHCS 3 could potentially exploit this vulnerability.",
"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-2020-28367"
},
{
"category": "external",
"summary": "RHBZ#1897646",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1897646"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2020-28367",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-28367"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-28367",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-28367"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/NpBGTTmKzpM/m/fLguyiM2CAAJ",
"url": "https://groups.google.com/g/golang-announce/c/NpBGTTmKzpM/m/fLguyiM2CAAJ"
}
],
"release_date": "2020-11-12T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2020-12-15T17:12:24+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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{
"category": "workaround",
"details": "If it\u0027s possible to confirm that the go project being built does not rely on any cgo code in the included dependencies, the env variable CGO_ENABLED=0 can be specified when using either `go get` or `go build`. \n\nFor example:\n CGO_ENABLED=0 go get github.com/someproject\n\nThis will not stop the files being downloaded but will stop any automatic complication of the cgo code, including inlined in the go file and separate .c files. Of course, this will only be effective if cgo is not relied upon in a given dependency and may not be appropriate in all scenarios.",
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],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"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": "Moderate"
}
],
"title": "golang: improper validation of cgo flags can lead to code execution at build time"
}
]
}
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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.