Publish GHSA-5jfw-gq64-q45f

2026-05-22 18:04:22 -07:00 · 2024-11-19 21:09:06 +00:00
parent 841b15464c
commit fcd481e32a
1 changed files with 67 additions and 0 deletions
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+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-5jfw-gq64-q45f",
+  "modified": "2024-11-19T21:07:59Z",
+  "published": "2024-11-19T21:07:59Z",
+  "aliases": [
+    "CVE-2024-52595"
+  ],
+  "summary": "HTML Cleaner allows crafted scripts in special contexts like svg or math to pass through",
+  "details": "### Impact\n\nThe HTML Parser in lxml does not properly handle context-switching for special HTML tags such as `<svg>`, `<math>` and `<noscript>`. This behavior deviates from how web browsers parse and interpret such tags. Specifically, content in CSS comments is ignored by lxml_html_clean but may be interpreted differently by web browsers, enabling malicious scripts to bypass the cleaning process. This vulnerability could lead to Cross-Site Scripting (XSS) attacks, compromising the security of users relying on lxml_html_clean in default configuration for sanitizing untrusted HTML content.\n\n### Patches\n\nUsers employing the HTML cleaner in a security-sensitive context should upgrade to lxml 0.4.0, which addresses this issue.\n\n### Workarounds\n\nAs a temporary mitigation, users can configure lxml_html_clean with the following settings to prevent the exploitation of this vulnerability:\n* `remove_tags`: Specify tags to remove - their content is moved to their parents' tags.\n* `kill_tags`: Specify tags to be removed completely.\n* `allow_tags`: Restrict the set of permissible tags, excluding context-switching tags like `<svg>`, `<math>` and `<noscript>`.\n\n### References\n\n* https://github.com/fedora-python/lxml_html_clean/pull/19\n* https://github.com/fedora-python/lxml_html_clean/pull/19/commits/c5d816f86eb3707d72a8ecf5f3823e0daa1b3808\n",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:H"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "PyPI",
+        "name": "lxml-html-clean"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "0.4.0"
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/fedora-python/lxml_html_clean/security/advisories/GHSA-5jfw-gq64-q45f"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/fedora-python/lxml_html_clean/pull/19"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/fedora-python/lxml_html_clean/commit/c5d816f86eb3707d72a8ecf5f3823e0daa1b3808"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/fedora-python/lxml_html_clean"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-184",
+      "CWE-79",
+      "CWE-83"
+    ],
+    "severity": "HIGH",
+    "github_reviewed": true,
+    "github_reviewed_at": "2024-11-19T21:07:59Z",
+    "nvd_published_at": null
+  }
+}