gsd-2020-15169
Vulnerability from gsd
Modified
2020-09-09 00:00
Details
There is a potential Cross-Site Scripting (XSS) vulnerability in Action
View's translation helpers. Views that allow the user to control the
default (not found) value of the `t` and `translate` helpers could be
susceptible to XSS attacks.
Impact
------
When an HTML-unsafe string is passed as the default for a missing
translation key [named `html` or ending in `_html`](https://guides.rubyonrails.org/i18n.html#using-safe-html-translations),
the default string is incorrectly marked as HTML-safe and not escaped.
Vulnerable code may look like the following examples:
```erb
<%# The welcome_html translation is not defined for the current locale: %>
<%= t("welcome_html", default: untrusted_user_controlled_string) %>
<%# Neither the title.html translation nor the missing.html translation is defined for the current locale: %>
<%= t("title.html", default: [:"missing.html", untrusted_user_controlled_string]) %>
```
Workarounds
-----------
Impacted users who can’t upgrade to a patched Rails version can avoid
this issue by manually escaping default translations with the
`html_escape` helper (aliased as `h`):
```erb
<%= t("welcome_html", default: h(untrusted_user_controlled_string)) %>
```
Aliases
Aliases
{ "GSD": { "alias": "CVE-2020-15169", "description": "In Action View before versions 5.2.4.4 and 6.0.3.3 there is a potential Cross-Site Scripting (XSS) vulnerability in Action View\u0027s translation helpers. Views that allow the user to control the default (not found) value of the `t` and `translate` helpers could be susceptible to XSS attacks. When an HTML-unsafe string is passed as the default for a missing translation key named html or ending in _html, the default string is incorrectly marked as HTML-safe and not escaped. This is patched in versions 6.0.3.3 and 5.2.4.4. A workaround without upgrading is proposed in the source advisory.", "id": "GSD-2020-15169", "references": [ "https://www.suse.com/security/cve/CVE-2020-15169.html", "https://www.debian.org/security/2020/dsa-4766", "https://access.redhat.com/errata/RHSA-2021:1313" ] }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "affected": [ { "package": { "ecosystem": "RubyGems", "name": "actionview", "purl": "pkg:gem/actionview" } } ], "aliases": [ "CVE-2020-15169", "GHSA-cfjv-5498-mph5" ], "details": "There is a potential Cross-Site Scripting (XSS) vulnerability in Action\nView\u0027s translation helpers. Views that allow the user to control the\ndefault (not found) value of the `t` and `translate` helpers could be\nsusceptible to XSS attacks.\n\nImpact\n------\n\nWhen an HTML-unsafe string is passed as the default for a missing\ntranslation key [named `html` or ending in `_html`](https://guides.rubyonrails.org/i18n.html#using-safe-html-translations),\nthe default string is incorrectly marked as HTML-safe and not escaped.\nVulnerable code may look like the following examples:\n\n```erb\n\u003c%# The welcome_html translation is not defined for the current locale: %\u003e\n\u003c%= t(\"welcome_html\", default: untrusted_user_controlled_string) %\u003e\n\n\u003c%# Neither the title.html translation nor the missing.html translation is defined for the current locale: %\u003e\n\u003c%= t(\"title.html\", default: [:\"missing.html\", untrusted_user_controlled_string]) %\u003e\n```\n\nWorkarounds\n-----------\nImpacted users who can\u2019t upgrade to a patched Rails version can avoid\nthis issue by manually escaping default translations with the\n`html_escape` helper (aliased as `h`):\n\n```erb\n\u003c%= t(\"welcome_html\", default: h(untrusted_user_controlled_string)) %\u003e\n```\n", "id": "GSD-2020-15169", "modified": "2020-09-09T00:00:00.000Z", "published": "2020-09-09T00:00:00.000Z", "references": [ { "type": "WEB", "url": "https://groups.google.com/g/rubyonrails-security/c/b-C9kSGXYrc" } ], "schema_version": "1.4.0", "severity": [ { "score": 5.4, "type": "CVSS_V3" } ], "summary": "Potential XSS vulnerability in Action View" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "security-advisories@github.com", "ID": "CVE-2020-15169", "STATE": "PUBLIC", "TITLE": "XSS in Action View" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "actionview", "version": { "version_data": [ { "version_value": "\u003c 5.2.4.4" }, { "version_value": "\u003e= 6.0.0.0, \u003c 6.0.3.3" } ] } } ] }, "vendor_name": "rails" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "In Action View before versions 5.2.4.4 and 6.0.3.3 there is a potential Cross-Site Scripting (XSS) vulnerability in Action View\u0027s translation helpers. Views that allow the user to control the default (not found) value of the `t` and `translate` helpers could be susceptible to XSS attacks. When an HTML-unsafe string is passed as the default for a missing translation key named html or ending in _html, the default string is incorrectly marked as HTML-safe and not escaped. This is patched in versions 6.0.3.3 and 5.2.4.4. A workaround without upgrading is proposed in the source advisory." } ] }, "impact": { "cvss": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N", "version": "3.1" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-79 Cross-site Scripting (XSS)" } ] } ] }, "references": { "reference_data": [ { "name": "https://github.com/rails/rails/security/advisories/GHSA-cfjv-5498-mph5", "refsource": "CONFIRM", "url": "https://github.com/rails/rails/security/advisories/GHSA-cfjv-5498-mph5" }, { "name": "DSA-4766", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2020/dsa-4766" }, { "name": "FEDORA-2020-4dd34860a3", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XJ7NUWXAEVRQCROIIBV4C6WXO6IR3KSB/" }, { "name": "[debian-lts-announce] 20201009 [SECURITY] [DLA 2403-1] rails security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00015.html" } ] }, "source": { "advisory": "GHSA-cfjv-5498-mph5", "discovery": "UNKNOWN" } }, "github.com/rubysec/ruby-advisory-db": { "cve": "2020-15169", "cvss_v3": 5.4, "date": "2020-09-09", "description": "There is a potential Cross-Site Scripting (XSS) vulnerability in Action\nView\u0027s translation helpers. Views that allow the user to control the\ndefault (not found) value of the `t` and `translate` helpers could be\nsusceptible to XSS attacks.\n\nImpact\n------\n\nWhen an HTML-unsafe string is passed as the default for a missing\ntranslation key [named `html` or ending in `_html`](https://guides.rubyonrails.org/i18n.html#using-safe-html-translations),\nthe default string is incorrectly marked as HTML-safe and not escaped.\nVulnerable code may look like the following examples:\n\n```erb\n\u003c%# The welcome_html translation is not defined for the current locale: %\u003e\n\u003c%= t(\"welcome_html\", default: untrusted_user_controlled_string) %\u003e\n\n\u003c%# Neither the title.html translation nor the missing.html translation is defined for the current locale: %\u003e\n\u003c%= t(\"title.html\", default: [:\"missing.html\", untrusted_user_controlled_string]) %\u003e\n```\n\nWorkarounds\n-----------\nImpacted users who can\u2019t upgrade to a patched Rails version can avoid\nthis issue by manually escaping default translations with the\n`html_escape` helper (aliased as `h`):\n\n```erb\n\u003c%= t(\"welcome_html\", default: h(untrusted_user_controlled_string)) %\u003e\n```\n", "framework": "rails", "gem": "actionview", "ghsa": "cfjv-5498-mph5", "patched_versions": [ "~\u003e 5.2.4, \u003e= 5.2.4.4", "\u003e= 6.0.3.3" ], "title": "Potential XSS vulnerability in Action View", "url": "https://groups.google.com/g/rubyonrails-security/c/b-C9kSGXYrc" }, "gitlab.com": { "advisories": [ { "affected_range": "\u003c5.2.4.4||\u003e=6.0.0.0 \u003c6.0.3.3", "affected_versions": "All versions before 5.2.4.4, all versions starting from 6.0.0.0 before 6.0.3.3", "cvss_v2": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "cwe_ids": [ "CWE-1035", "CWE-79", "CWE-937" ], "date": "2020-12-08", "description": "In Action View there is a potential Cross-Site Scripting (XSS) vulnerability in Action View\u0027s translation helpers. Views that allow the user to control the default (not found) value of the `t` and `translate` helpers could be susceptible to XSS attacks. When an HTML-unsafe string is passed as the default for a missing translation key named html or ending in `_html`, the default string is incorrectly marked as HTML-safe and not escaped.", "fixed_versions": [ "5.2.4.4", "6.0.3.3" ], "identifier": "CVE-2020-15169", "identifiers": [ "CVE-2020-15169", "GHSA-cfjv-5498-mph5" ], "not_impacted": "All versions starting from 5.2.4.4 before 6.0.0.0, all versions starting from 6.0.3.3", "package_slug": "gem/actionview", "pubdate": "2020-09-11", "solution": "Upgrade to versions 5.2.4.4, 6.0.3.3 or above.", "title": "Cross-site Scripting", "urls": [ "https://nvd.nist.gov/vuln/detail/CVE-2020-15169" ], "uuid": "743b5195-4f16-40eb-8347-9faa07c0d4f1" } ] }, "nvd.nist.gov": { "configurations": { "CVE_data_version": "4.0", "nodes": [ { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:a:action_view_project:action_view:*:*:*:*:*:ruby:*:*", "cpe_name": [], "versionEndExcluding": "5.2.4.4", "vulnerable": true }, { "cpe23Uri": "cpe:2.3:a:action_view_project:action_view:*:*:*:*:*:ruby:*:*", "cpe_name": [], "versionEndExcluding": "6.0.3.3", "versionStartIncluding": "6.0.0.0", "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" } ] }, "cve": { "CVE_data_meta": { "ASSIGNER": "security-advisories@github.com", "ID": "CVE-2020-15169" }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "en", "value": "In Action View before versions 5.2.4.4 and 6.0.3.3 there is a potential Cross-Site Scripting (XSS) vulnerability in Action View\u0027s translation helpers. Views that allow the user to control the default (not found) value of the `t` and `translate` helpers could be susceptible to XSS attacks. When an HTML-unsafe string is passed as the default for a missing translation key named html or ending in _html, the default string is incorrectly marked as HTML-safe and not escaped. This is patched in versions 6.0.3.3 and 5.2.4.4. A workaround without upgrading is proposed in the source advisory." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "en", "value": "CWE-79" } ] } ] }, "references": { "reference_data": [ { "name": "https://github.com/rails/rails/security/advisories/GHSA-cfjv-5498-mph5", "refsource": "CONFIRM", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://github.com/rails/rails/security/advisories/GHSA-cfjv-5498-mph5" }, { "name": "DSA-4766", "refsource": "DEBIAN", "tags": [ "Third Party Advisory" ], "url": "https://www.debian.org/security/2020/dsa-4766" }, { "name": "FEDORA-2020-4dd34860a3", "refsource": "FEDORA", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XJ7NUWXAEVRQCROIIBV4C6WXO6IR3KSB/" }, { "name": "[debian-lts-announce] 20201009 [SECURITY] [DLA 2403-1] rails security update", "refsource": "MLIST", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00015.html" } ] } }, "impact": { "baseMetricV2": { "acInsufInfo": false, "cvssV2": { "accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0" }, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "severity": "MEDIUM", "userInteractionRequired": true }, "baseMetricV3": { "cvssV3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1" }, "exploitabilityScore": 2.8, "impactScore": 2.7 } }, "lastModifiedDate": "2020-12-08T18:58Z", "publishedDate": "2020-09-11T16:15Z" } } }
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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.
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- Patched: This vulnerability was successfully patched by the user reporting the sighting.
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