{"id":2148,"date":"2024-11-07T11:33:15","date_gmt":"2024-11-07T10:33:15","guid":{"rendered":"https:\/\/www.visionconnect.de\/blog\/?p=2148"},"modified":"2024-11-07T11:33:16","modified_gmt":"2024-11-07T10:33:16","slug":"content-security-policy-die-website-vor-angriffen-schuetzen","status":"publish","type":"post","link":"https:\/\/www.visionconnect.de\/blog\/2024\/content-security-policy-die-website-vor-angriffen-schuetzen\/","title":{"rendered":"Content Security Policy &#8211; Die Website vor Angriffen sch\u00fctzen"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Die Sicherheit der eigenen Website wird zunehmend herausfordernder. Mithilfe von Cross-Site-Scripting (XSS) platzieren Angreifer \u00fcber Schwachstellen Schadcode auf dem eigenen Server.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dabei handelt es sich um den Versuch, durch manipulierte Links und darin enthaltene Befehle Scripte auf den Server einzuschleusen und zumindest einen Teil der Kontrolle \u00fcber die Website oder das Ger\u00e4t zu erlangen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Mit der <\/strong><strong>CSP (Content Security Policy) <\/strong>ist es technisch m\u00f6glich, die Website \u00fcber den Browser vor dem Eindringen von Schadcode durch Cross-Site-Scripting (XSS) zu sch\u00fctzen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Durch die Hinterlegung bestimmter Regeln einer CSP wird festgelegt, welche Quellen vertrauensw\u00fcrdig sind und von welchen der Browser Daten holen und ggf. \u00fcbertragen darf. Dies ist z. B. wichtig f\u00fcr Dienste wie Google Analytics und den Google Tag Manager oder anderen externen Angeboten.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">CSP in TYPO3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Mit der Version 12 wurde in TYPO3 das Content-Security-Policy-Modul eingef\u00fchrt.<br>Hiermit wird das Risiko von Cross-Site-Scripting Attacken minimiert.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00dcber eine Konfigurationsdatei wird dabei festgelegt, welche Domains und Skripte als vertrauensw\u00fcrdig eingestuft und vom Browser ausgef\u00fchrt werden d\u00fcrfen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Potenzielle CSP-Verst\u00f6\u00dfe werden dem TYPO3-System gemeldet und intern in der Datenbanktabelle <code>gespeichert<\/code>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Screenshot-2024-11-05-110507.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Screenshot-2024-11-05-110507-1024x549.png\" alt=\"Backend-Modul Content-Security-Policy\" class=\"wp-image-2150\" srcset=\"https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Screenshot-2024-11-05-110507-1024x549.png 1024w, https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Screenshot-2024-11-05-110507-418x224.png 418w, https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Screenshot-2024-11-05-110507-1536x824.png 1536w, https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Screenshot-2024-11-05-110507-825x443.png 825w, https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Screenshot-2024-11-05-110507.png 1644w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Ansicht des Backend-Modul Content-Security-Policy<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Das Content-Security-Policy-Backend-Modul unterst\u00fctzt Anwender, um k\u00fcrzliche Verst\u00f6\u00dfe und m\u00f6gliche L\u00f6sungen auszuw\u00e4hlen. Somit besteht die M\u00f6glichkeit, die Content-Security-Policy w\u00e4hrend der Laufzeit zu erweitern.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Zus\u00e4tzlich k\u00f6nnen bei Erweiterungen des eigenen Angebots auch vertrauensw\u00fcrdige Domains hinzugef\u00fcgt werden.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Screenshot-2024-11-05-110346.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"144\" src=\"https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Screenshot-2024-11-05-110346-1024x144.png\" alt=\"Ansicht der Developer Tools in Firefox. Darstellung der Blockierung eines Skriptes von consent.cookiebot.com durch die CSP Regeln. Die Blockierung ist rot markiert\" class=\"wp-image-2151\" srcset=\"https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Screenshot-2024-11-05-110346-1024x144.png 1024w, https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Screenshot-2024-11-05-110346-418x59.png 418w, https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Screenshot-2024-11-05-110346-825x116.png 825w, https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Screenshot-2024-11-05-110346.png 1159w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Blockierung eiens neuen Skriptes von consent.cookiebot.com \u00fcber die CSP Regeln<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Standardm\u00e4\u00dfig werden die einzelnen CSP-Module nur bei Neuinstallationen eines TYPO3-Systems aktiviert. Sofern ein bestehendes TYPO3 System durch ein Upgrade aktualisiert wird, m\u00fcssen die Module initial aktiviert werden.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Die eigene Website pr\u00fcfen<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ob Ihre Website gut abgesichert ist, kann auf der Seite <a href=\"https:\/\/securityheaders.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/securityheaders.com\/<\/a> f\u00fcr die eigen Domain gepr\u00fcft werden.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Iw6wL9CMMFNpCRvT.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"264\" src=\"https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Iw6wL9CMMFNpCRvT-1024x264.png\" alt=\"Ergebnis der Website www.visionconnect.de \u00fcber die Pr\u00fcfroutine von https:\/\/securityheaders.com\/ \nDas Ergebnis A+ wird in gr\u00fcn dargestellt. Alle Pr\u00fcfschritte werden aufgelistet\" class=\"wp-image-2152\" srcset=\"https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Iw6wL9CMMFNpCRvT-1024x264.png 1024w, https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Iw6wL9CMMFNpCRvT-418x108.png 418w, https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Iw6wL9CMMFNpCRvT-825x213.png 825w, https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/Iw6wL9CMMFNpCRvT.png 1215w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Ergebnis der Website www.visionconnect.de<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Gerne beraten wir Sie bei der Website-Analyse und Optmierung Ihrer Sicherheitsma\u00dfnahmen.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mit der CSP (Content Security Policy) ist es technisch m\u00f6glich, die Website \u00fcber den Browser vor dem Eindringen von Schadcode durch Cross-Site-Scripting (XSS) zu sch\u00fctzen.<\/p>\n","protected":false},"author":2,"featured_media":2156,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"activitypub_content_warning":"","activitypub_content_visibility":"","activitypub_max_image_attachments":3,"activitypub_interaction_policy_quote":"anyone","activitypub_status":"federate","footnotes":""},"categories":[5],"tags":[11,10],"class_list":["post-2148","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technik","tag-sicherheit","tag-typo3"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Content Security Policy - Die Website vor Angriffen sch\u00fctzen - VisionConnect: TYPO3 CMS, Wordpress, Shops - Ihre Agentur in Hannover<\/title>\n<meta name=\"description\" content=\"Mit der Content Security Policy ist m\u00f6glich, die Website \u00fcber den Browser vor Cross-Site-Scripting zu sch\u00fctzen.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.visionconnect.de\/blog\/2024\/content-security-policy-die-website-vor-angriffen-schuetzen\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Content Security Policy - Die Website vor Angriffen sch\u00fctzen - VisionConnect: TYPO3 CMS, Wordpress, Shops - Ihre Agentur in Hannover\" \/>\n<meta property=\"og:description\" content=\"Mit der Content Security Policy ist m\u00f6glich, die Website \u00fcber den Browser vor Cross-Site-Scripting zu sch\u00fctzen.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.visionconnect.de\/blog\/2024\/content-security-policy-die-website-vor-angriffen-schuetzen\/\" \/>\n<meta property=\"og:site_name\" content=\"VisionConnect GmbH Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/VisionConnectGmbH\" \/>\n<meta property=\"article:published_time\" content=\"2024-11-07T10:33:15+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-11-07T10:33:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.visionconnect.de\/blog\/wp-content\/uploads\/2024\/11\/social-content-security-policy.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"590\" \/>\n\t<meta property=\"og:image:height\" content=\"331\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Markus S\u00f6th\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@elektroluder\" \/>\n<meta name=\"twitter:site\" content=\"@visionconnect\" \/>\n<meta name=\"twitter:label1\" content=\"Geschrieben von\" \/>\n\t<meta name=\"twitter:data1\" content=\"Markus S\u00f6th\" \/>\n\t<meta name=\"twitter:label2\" content=\"Gesch\u00e4tzte Lesezeit\" \/>\n\t<meta name=\"twitter:data2\" content=\"3\u00a0Minuten\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.visionconnect.de\\\/blog\\\/2024\\\/content-security-policy-die-website-vor-angriffen-schuetzen\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.visionconnect.de\\\/blog\\\/2024\\\/content-security-policy-die-website-vor-angriffen-schuetzen\\\/\"},\"author\":{\"name\":\"Markus S\u00f6th\",\"@id\":\"https:\\\/\\\/www.visionconnect.de\\\/blog\\\/#\\\/schema\\\/person\\\/ec2617619552426e3bd479fd57433f19\"},\"headline\":\"Content Security Policy &#8211; 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