Vulnerability-Lookup

BDU:2024-04170

Vulnerability from fstec - Published: 20.12.2023

Title

Уязвимость парсера HtmlAgilityPack библиотеки для выполнения быстрой настраиваемой очистки HTML AntiSamy, позволяющая нарушителю проводить межсайтовые сценарные атаки

Description

Уязвимость парсера HtmlAgilityPack библиотеки для выполнения быстрой настраиваемой очистки HTML AntiSamy связана с непринятием мер по защите структуры веб-страницы в результате доступа к директиве preserveComments. Эксплуатация уязвимости может позволить нарушителю, действующему удалённо, проводить межсайтовые сценарные атаки

Severity ?


                    
                      AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Vendor

Arshan Dabirsiaghi

Software Name

AntiSamy

Software Version

до 1.2.0 (AntiSamy)

Possible Mitigations

Использование рекомендаций: https://github.com/spassarop/antisamy-dotnet/commit/7e500daef6ad9c10e97c68feab78f4cb6e3083c6 https://github.com/spassarop/antisamy-dotnet/commit/8117911933e75a25cd0054ef017577486338444a https://github.com/spassarop/antisamy-dotnet/releases/tag/v1.2.0 Компенсирующие меры: В случае невозможности установить обновление отредактируйте файл политики AntiSamy (например, antisamy.xml), удалив директиву preserveComments или установив для нее значение false. Удалите тег <noscript> , определяющий секцию HTML кода, добавив его в определения тегов под <tagrules> узлом (или полностью удалив его, если он присутствует): <tag name="noscript" action="remove"/>

Reference

https://vuldb.com/?id.249520 https://github.com/spassarop/antisamy-dotnet/commit/7e500daef6ad9c10e97c68feab78f4cb6e3083c6 https://github.com/spassarop/antisamy-dotnet/commit/8117911933e75a25cd0054ef017577486338444a https://github.com/spassarop/antisamy-dotnet/security/advisories/GHSA-8x6f-956f-q43w

CWE

CWE-79

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:L/Au:N/C:P/I:P/A:N",
  "CVSS 3.0": "AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Arshan Dabirsiaghi",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "\u0434\u043e 1.2.0 (AntiSamy)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\nhttps://github.com/spassarop/antisamy-dotnet/commit/7e500daef6ad9c10e97c68feab78f4cb6e3083c6 \nhttps://github.com/spassarop/antisamy-dotnet/commit/8117911933e75a25cd0054ef017577486338444a \nhttps://github.com/spassarop/antisamy-dotnet/releases/tag/v1.2.0\n\n\u041a\u043e\u043c\u043f\u0435\u043d\u0441\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u043c\u0435\u0440\u044b:\n\u0412 \u0441\u043b\u0443\u0447\u0430\u0435 \u043d\u0435\u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u044c \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043e\u0442\u0440\u0435\u0434\u0430\u043a\u0442\u0438\u0440\u0443\u0439\u0442\u0435 \u0444\u0430\u0439\u043b \u043f\u043e\u043b\u0438\u0442\u0438\u043a\u0438 AntiSamy (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, antisamy.xml), \u0443\u0434\u0430\u043b\u0438\u0432 \u0434\u0438\u0440\u0435\u043a\u0442\u0438\u0432\u0443 preserveComments \u0438\u043b\u0438 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0432 \u0434\u043b\u044f \u043d\u0435\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 false. \n\u0423\u0434\u0430\u043b\u0438\u0442\u0435 \u0442\u0435\u0433 \u003cnoscript\u003e , \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u044e\u0449\u0438\u0439 \u0441\u0435\u043a\u0446\u0438\u044e HTML \u043a\u043e\u0434\u0430, \u0434\u043e\u0431\u0430\u0432\u0438\u0432 \u0435\u0433\u043e \u0432 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u0442\u0435\u0433\u043e\u0432 \u043f\u043e\u0434 \u003ctagrules\u003e \u0443\u0437\u043b\u043e\u043c (\u0438\u043b\u0438 \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u0443\u0434\u0430\u043b\u0438\u0432 \u0435\u0433\u043e, \u0435\u0441\u043b\u0438 \u043e\u043d \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u0435\u0442):\n\u003ctag name=\"noscript\" action=\"remove\"/\u003e",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "20.12.2023",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "29.05.2024",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "29.05.2024",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2024-04170",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2023-51652",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "AntiSamy",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": null,
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u0430\u0440\u0441\u0435\u0440\u0430 HtmlAgilityPack \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0431\u044b\u0441\u0442\u0440\u043e\u0439 \u043d\u0430\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u043e\u0447\u0438\u0441\u0442\u043a\u0438 HTML AntiSamy, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043f\u0440\u043e\u0432\u043e\u0434\u0438\u0442\u044c \u043c\u0435\u0436\u0441\u0430\u0439\u0442\u043e\u0432\u044b\u0435 \u0441\u0446\u0435\u043d\u0430\u0440\u043d\u044b\u0435 \u0430\u0442\u0430\u043a\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u043f\u0440\u0438\u043d\u044f\u0442\u0438\u0435 \u043c\u0435\u0440 \u043f\u043e \u0437\u0430\u0449\u0438\u0442\u0435 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b \u0432\u0435\u0431-\u0441\u0442\u0440\u0430\u043d\u0438\u0446\u044b (\u0438\u043b\u0438 \\\u00ab\u041c\u0435\u0436\u0441\u0430\u0439\u0442\u043e\u0432\u0430\u044f \u0441\u0446\u0435\u043d\u0430\u0440\u043d\u0430\u044f \u0430\u0442\u0430\u043a\u0430\\\u00bb) (CWE-79)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u0430\u0440\u0441\u0435\u0440\u0430 HtmlAgilityPack \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0431\u044b\u0441\u0442\u0440\u043e\u0439 \u043d\u0430\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u043e\u0447\u0438\u0441\u0442\u043a\u0438 HTML AntiSamy \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u043f\u0440\u0438\u043d\u044f\u0442\u0438\u0435\u043c \u043c\u0435\u0440 \u043f\u043e \u0437\u0430\u0449\u0438\u0442\u0435 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b \u0432\u0435\u0431-\u0441\u0442\u0440\u0430\u043d\u0438\u0446\u044b \u0432 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0435 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a \u0434\u0438\u0440\u0435\u043a\u0442\u0438\u0432\u0435 preserveComments. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e, \u043f\u0440\u043e\u0432\u043e\u0434\u0438\u0442\u044c \u043c\u0435\u0436\u0441\u0430\u0439\u0442\u043e\u0432\u044b\u0435 \u0441\u0446\u0435\u043d\u0430\u0440\u043d\u044b\u0435 \u0430\u0442\u0430\u043a\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": "\u0414\u0430\u043d\u043d\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u0435\u0442 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0435 \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u0435, \u0435\u0441\u043b\u0438 \u0438\u043c\u0435\u0435\u0442\u0441\u044f \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u0434\u0438\u0440\u0435\u043a\u0442\u0438\u0432\u0435 preserveComments.",
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u0418\u043d\u044a\u0435\u043a\u0446\u0438\u044f",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://vuldb.com/?id.249520\nhttps://github.com/spassarop/antisamy-dotnet/commit/7e500daef6ad9c10e97c68feab78f4cb6e3083c6 \nhttps://github.com/spassarop/antisamy-dotnet/commit/8117911933e75a25cd0054ef017577486338444a \nhttps://github.com/spassarop/antisamy-dotnet/security/advisories/GHSA-8x6f-956f-q43w",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041f\u0440\u0438\u043a\u043b\u0430\u0434\u043d\u043e\u0435 \u041f\u041e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-79",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 6,4)\n\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 6,1)"
}

CVE-2023-51652 (GCVE-0-2023-51652)

Vulnerability from cvelistv5 – Published: 2024-01-02 20:06 – Updated: 2025-04-17 18:37

Title

OWASP.AntiSamy mXSS when preserving comments

Summary

OWASP AntiSamy .NET is a library for performing cleansing of HTML coming from untrusted sources. Prior to version 1.2.0, there is a potential for a mutation cross-site scripting (mXSS) vulnerability in AntiSamy caused by flawed parsing of the HTML being sanitized. To be subject to this vulnerability the `preserveComments` directive must be enabled in your policy file and also allow for certain tags at the same time. As a result, certain crafty inputs can result in elements in comment tags being interpreted as executable when using AntiSamy's sanitized output. This is patched in OWASP AntiSamy .NET 1.2.0 and later. See important remediation details in the reference given below. As a workaround, manually edit the AntiSamy policy file (e.g., antisamy.xml) by deleting the `preserveComments` directive or setting its value to `false`, if present. Also it would be useful to make AntiSamy remove the `noscript` tag by adding a line described in the GitHub Security Advisory to the tag definitions under the `<tagrules>` node, or deleting it entirely if present. As the previously mentioned policy settings are preconditions for the mXSS attack to work, changing them as recommended should be sufficient to protect you against this vulnerability when using a vulnerable version of this library. However, the existing bug would still be present in AntiSamy or its parser dependency (HtmlAgilityPack). The safety of this workaround relies on configurations that may change in the future and don't address the root cause of the vulnerability. As such, it is strongly recommended to upgrade to a fixed version of AntiSamy.

Severity ?

6.1 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

GitHub_M

References

URL

Tags

	https://github.com/spassarop/antisamy-dotnet/secu…	x_refsource_CONFIRM
	https://github.com/spassarop/antisamy-dotnet/comm…	x_refsource_MISC
	https://github.com/spassarop/antisamy-dotnet/comm…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	spassarop	antisamy-dotnet	Affected: < 1.2.0

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

BDU:2024-04170

CVE-2023-51652 (GCVE-0-2023-51652)

Tags

Sightings

Nomenclature