suse-su-2022:0895-1
Vulnerability from csaf_suse
Published
2022-03-17 14:38
Modified
2022-03-17 14:38
Summary
Security update for python-lxml

Notes

Title of the patch
Security update for python-lxml
Description of the patch
This update for python-lxml fixes the following issues: - CVE-2021-43818: Removed SVG image data URLs since they can embed script content (bsc#1193752). - CVE-2021-28957: Fixed a potential XSS due to improper input sanitization (bsc#1184177). - CVE-2020-27783: Fixed a potential XSS due to improper HTML parsing (bsc#1179534). - CVE-2018-19787: Fixed a potential XSS due to improper input sanitization (bsc#1118088).
Patchnames
HPE-Helion-OpenStack-8-2022-895,SUSE-2022-895,SUSE-OpenStack-Cloud-8-2022-895,SUSE-OpenStack-Cloud-Crowbar-8-2022-895,SUSE-SLE-SERVER-12-SP5-2022-895
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).


To clipboard 

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          "text": "https://www.suse.com/security/cve/CVE-2018-19787"
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          "category": "impact",
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          "details": "moderate"
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      "title": "CVE-2018-19787"
    },
    {
      "cve": "CVE-2020-27783",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2020-27783"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A XSS vulnerability was discovered in python-lxml\u0027s clean module. The module\u0027s parser didn\u0027t properly imitate browsers, which caused different behaviors between the sanitizer and the user\u0027s page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.",
          "title": "CVE description"
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          "category": "external",
          "summary": "CVE-2020-27783",
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          "category": "external",
          "summary": "SUSE Bug 1179534 for CVE-2020-27783",
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      "remediations": [
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          "category": "vendor_fix",
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      "scores": [
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          "cvss_v3": {
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
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    {
      "cve": "CVE-2021-28957",
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        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2021-28957"
        }
      ],
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        {
          "category": "general",
          "text": "An XSS vulnerability was discovered in python-lxml\u0027s clean module versions before 4.6.3. When disabling the safe_attrs_only and forms arguments, the Cleaner class does not remove the formaction attribute allowing for JS to bypass the sanitizer. A remote attacker could exploit this flaw to run arbitrary JS code on users who interact with incorrectly sanitized HTML. This issue is patched in lxml 4.6.3.",
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
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      "title": "CVE-2021-28957"
    },
    {
      "cve": "CVE-2021-43818",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2021-43818"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "lxml is a library for processing XML and HTML in the Python language. Prior to version 4.6.5, the HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs. Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5 to receive a patch. There are no known workarounds available.",
          "title": "CVE description"
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      "title": "CVE-2021-43818"
    }
  ]
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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