{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Moderate" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright © Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "An update for the go-toolset:rhel8 module is now available for Red Hat Enterprise Linux 8.\n\nRed 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.", "title": "Topic" }, { "category": "general", "text": "Go Toolset provides the Go programming language tools and libraries. Go is alternatively known as golang. \n\nThe following packages have been upgraded to a later upstream version: golang (1.16.7). (BZ#1938071)\n\nSecurity Fix(es):\n\n* golang: net: lookup functions may return invalid host names (CVE-2021-33195)\n\n* golang: net/http/httputil: ReverseProxy forwards connection headers if first one is empty (CVE-2021-33197)\n\n* golang: math/big.Rat: may cause a panic or an unrecoverable fatal error if passed inputs with very large exponents (CVE-2021-33198)\n\n* golang: net/http/httputil: panic due to racy read of persistConn after handler panic (CVE-2021-36221)\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.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.", "title": "Details" }, { "category": "legal_disclaimer", "text": "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.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2021:4156", "url": "https://access.redhat.com/errata/RHSA-2021:4156" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#moderate", "url": "https://access.redhat.com/security/updates/classification/#moderate" }, { "category": "external", "summary": "https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.5_release_notes/", "url": "https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.5_release_notes/" }, { "category": "external", "summary": "1972825", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1972825" }, { "category": "external", "summary": "1976168", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1976168" }, { "category": "external", "summary": "1979100", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1979100" }, { "category": "external", "summary": "1989564", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1989564" }, { "category": "external", "summary": "1989570", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1989570" }, { "category": "external", "summary": "1989575", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1989575" }, { "category": "external", "summary": "1995656", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1995656" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_4156.json" } ], "title": "Red Hat Security Advisory: go-toolset:rhel8 security, bug fix, and enhancement update", "tracking": { "current_release_date": "2026-06-28T12:35:18+00:00", "generator": { "date": "2026-06-28T12:35:18+00:00", "engine": { "name": "Red Hat SDEngine", "version": "5.2.6" } }, "id": "RHSA-2021:4156", "initial_release_date": "2021-11-09T17:49:22+00:00", "revision_history": [ { "date": "2021-11-09T17:49:22+00:00", "number": "1", "summary": "Initial version" }, { "date": "2021-11-09T17:49:22+00:00", "number": "2", "summary": "Last updated version" }, { "date": "2026-06-28T12:35:18+00:00", "number": "3", "summary": "Last generated version" } ], "status": "final", "version": "3" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Red Hat Enterprise Linux AppStream (v. 8)", "product": { "name": "Red Hat Enterprise Linux AppStream (v. 8)", 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"category": "description", "text": "A flaw was found in Go. The LookupCNAME, LookupSRV, LookupMX, LookupNS, and LookupAddr functions in the net package and methods on the Resolver type, may return arbitrary values retrieved from DNS, allowing injection of unexpected contents. The highest threat from this vulnerability is to integrity.", "title": "Vulnerability description" }, { "category": "summary", "text": "golang: net: lookup functions may return invalid host names", "title": "Vulnerability summary" }, { "category": "other", "text": "* Since OpenShift Container Platform 3.11 is in Maintenance Phase of the support, only Important and Critical severity vulnerabilities will be addressed at this time.\n\n* For Red Hat OpenStack Platform, because the flaw has a lower impact and the fix would require a substantial amount of development, no update will be provided at this time for the golang-qpid-apache package.\n\n* In Service Telemetry Framework, because the flaw has a lower impact and the package is not directly used by STF, no updates will be provided at this time for the STF containers.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "AppStream-8.5.0.GA:delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.src::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-debuginfo-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-debugsource-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.aarch64::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.ppc64le::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.s390x::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.src::go-toolset:rhel8", 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} ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1" }, "products": [ "AppStream-8.5.0.GA:delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.src::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-debuginfo-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-debugsource-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.aarch64::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.ppc64le::go-toolset:rhel8", 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"system_name": "Red Hat Bugzilla ID", "text": "1989570" } ], "notes": [ { "category": "description", "text": "A flaw was found in Go, acting as an unintended proxy or intermediary, where ReverseProxy forwards connection headers if the first one was empty. This flaw allows an attacker to drop arbitrary headers. The highest threat from this vulnerability is to integrity.", "title": "Vulnerability description" }, { "category": "summary", "text": "golang: net/http/httputil: ReverseProxy forwards connection headers if first one is empty", "title": "Vulnerability summary" }, { "category": "other", "text": "* Since OpenShift Container Platform 3.11 is in Maintenance Phase of the support, only Important and Critical severity vulnerabilities will be addressed at this time.\n\n* For Red Hat OpenStack Platform, because the flaw has a lower impact and the fix would require a substantial amount of development, no update will be provided at this time for the golang-qpid-apache package.\n\n* In Service Telemetry Framework, because the flaw has a lower impact and the package is not directly used by STF, no updates will be provided at this time for the STF containers.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "AppStream-8.5.0.GA:delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.src::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-debuginfo-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-debugsource-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.aarch64::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.ppc64le::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.s390x::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.src::go-toolset:rhel8", 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} ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1" }, "products": [ "AppStream-8.5.0.GA:delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.src::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-debuginfo-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-debugsource-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.aarch64::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.ppc64le::go-toolset:rhel8", 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"2021-08-02T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "1989575" } ], "notes": [ { "category": "description", "text": "A flaw was found in Go, where it attempts to allocate excessive memory. This issue may cause panic or unrecoverable fatal error if passed inputs with very large exponents. The highest threat from this vulnerability is to system availability.", "title": "Vulnerability description" }, { "category": "summary", "text": "golang: math/big.Rat: may cause a panic or an unrecoverable fatal error if passed inputs with very large exponents", "title": "Vulnerability summary" }, { "category": "other", "text": "* Since OpenShift Container Platform 3.11 is in Maintenance Phase of the support, only Important and Critical severity vulnerabilities will be addressed at this time.\n\n* In Service Telemetry Framework, because the flaw has a lower impact and the package is not directly used by STF, no updates will be provided at this time for the STF containers.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's 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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"https://groups.google.com/g/golang-announce/c/RgCMkAEQjSI" } ], "release_date": "2021-03-10T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2021-11-09T17:49:22+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": [ "AppStream-8.5.0.GA:delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.src::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-debuginfo-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-debugsource-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.aarch64::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.ppc64le::go-toolset:rhel8", 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"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" }, "products": [ "AppStream-8.5.0.GA:delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.src::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-debuginfo-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-debugsource-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.aarch64::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.ppc64le::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.s390x::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.src::go-toolset:rhel8", 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"AppStream-8.5.0.GA:golang-docs-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.noarch::go-toolset:rhel8", "AppStream-8.5.0.GA:golang-misc-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.noarch::go-toolset:rhel8", "AppStream-8.5.0.GA:golang-race-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:golang-src-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.noarch::go-toolset:rhel8", "AppStream-8.5.0.GA:golang-tests-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.noarch::go-toolset:rhel8" ] } ], "threats": [ { "category": "impact", "details": "Moderate" } ], "title": "golang: math/big.Rat: may cause a panic or an unrecoverable fatal error if passed inputs with very large exponents" }, { "cve": "CVE-2021-36221", "cwe": { "id": "CWE-362", "name": "Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')" }, "discovery_date": "2021-08-10T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "1995656" } ], "notes": [ { "category": "description", "text": "A race condition flaw was found in Go. The incoming requests body weren't closed after the handler panic and as a consequence this could lead to ReverseProxy crash. The highest threat from this vulnerability is to Availability.", "title": "Vulnerability description" }, { "category": "summary", "text": "golang: net/http/httputil: panic due to racy read of persistConn after handler panic", "title": "Vulnerability summary" }, { "category": "other", "text": "* In Red Hat OpenStack Platform, because the flaw has a lower impact and the fix would require a substantial amount of development, no update will be provided at this time for the impacted RHOSP packages.\n\n* In Service Telemetry Framework, because the flaw has a lower impact and the package is not directly used by STF1.3, no update will be provided at this time for the STF1.3 sg-core-container. Additionally, because Service Telemetry Framework1.2 will be retiring soon, no update will be provided at this time for the STF1.2 smart-gateway-container.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "AppStream-8.5.0.GA:delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.src::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-debuginfo-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-debugsource-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.aarch64::go-toolset:rhel8", 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"https://bugzilla.redhat.com/show_bug.cgi?id=1995656" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2021-36221", "url": "https://www.cve.org/CVERecord?id=CVE-2021-36221" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-36221", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-36221" }, { "category": "external", "summary": "https://groups.google.com/g/golang-announce/c/uHACNfXAZqk", "url": "https://groups.google.com/g/golang-announce/c/uHACNfXAZqk" } ], "release_date": "2021-08-05T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2021-11-09T17:49:22+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": [ "AppStream-8.5.0.GA:delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.src::go-toolset:rhel8", 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"availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "products": [ "AppStream-8.5.0.GA:delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.src::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-debuginfo-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:delve-debugsource-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.aarch64::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.ppc64le::go-toolset:rhel8", "AppStream-8.5.0.GA:go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.s390x::go-toolset:rhel8", 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