rhsa-2021_1898
Vulnerability from csaf_redhat
Published
2021-05-18 14:56
Modified
2024-11-15 07:31
Summary
Red Hat Security Advisory: python-lxml security update

Notes

Topic
An update for python-lxml is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
lxml is an XML processing library providing access to libxml2 and libxslt libraries using the Python ElementTree API. Security Fix(es): * python-lxml: mXSS due to the use of improper parser (CVE-2020-27783) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.


To clipboard 

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        "name": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)"
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          "text": "A Cross-site Scripting (XSS) vulnerability was found in the python-lxml\u0027s clean module. The module\u0027s parser did not properly imitate browsers, causing different behaviors between the sanitizer and the user\u0027s page. This flaw allows a remote attacker to run arbitrary HTML/JS code. The highest threat from this vulnerability is to confidentiality and integrity.",
          "title": "Vulnerability description"
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          "text": "python-lxml: mXSS due to the use of improper parser",
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          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-27783",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-27783"
        }
      ],
      "release_date": "2020-10-18T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-05-18T14:56:24+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "AppStream-8.4.0.GA:python-lxml-0:4.2.3-2.el8.src",
            "AppStream-8.4.0.GA:python-lxml-debugsource-0:4.2.3-2.el8.aarch64",
            "AppStream-8.4.0.GA:python-lxml-debugsource-0:4.2.3-2.el8.ppc64le",
            "AppStream-8.4.0.GA:python-lxml-debugsource-0:4.2.3-2.el8.s390x",
            "AppStream-8.4.0.GA:python-lxml-debugsource-0:4.2.3-2.el8.x86_64",
            "AppStream-8.4.0.GA:python3-lxml-0:4.2.3-2.el8.aarch64",
            "AppStream-8.4.0.GA:python3-lxml-0:4.2.3-2.el8.ppc64le",
            "AppStream-8.4.0.GA:python3-lxml-0:4.2.3-2.el8.s390x",
            "AppStream-8.4.0.GA:python3-lxml-0:4.2.3-2.el8.x86_64",
            "AppStream-8.4.0.GA:python3-lxml-debuginfo-0:4.2.3-2.el8.aarch64",
            "AppStream-8.4.0.GA:python3-lxml-debuginfo-0:4.2.3-2.el8.ppc64le",
            "AppStream-8.4.0.GA:python3-lxml-debuginfo-0:4.2.3-2.el8.s390x",
            "AppStream-8.4.0.GA:python3-lxml-debuginfo-0:4.2.3-2.el8.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:1898"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "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"
          },
          "products": [
            "AppStream-8.4.0.GA:python-lxml-0:4.2.3-2.el8.src",
            "AppStream-8.4.0.GA:python-lxml-debugsource-0:4.2.3-2.el8.aarch64",
            "AppStream-8.4.0.GA:python-lxml-debugsource-0:4.2.3-2.el8.ppc64le",
            "AppStream-8.4.0.GA:python-lxml-debugsource-0:4.2.3-2.el8.s390x",
            "AppStream-8.4.0.GA:python-lxml-debugsource-0:4.2.3-2.el8.x86_64",
            "AppStream-8.4.0.GA:python3-lxml-0:4.2.3-2.el8.aarch64",
            "AppStream-8.4.0.GA:python3-lxml-0:4.2.3-2.el8.ppc64le",
            "AppStream-8.4.0.GA:python3-lxml-0:4.2.3-2.el8.s390x",
            "AppStream-8.4.0.GA:python3-lxml-0:4.2.3-2.el8.x86_64",
            "AppStream-8.4.0.GA:python3-lxml-debuginfo-0:4.2.3-2.el8.aarch64",
            "AppStream-8.4.0.GA:python3-lxml-debuginfo-0:4.2.3-2.el8.ppc64le",
            "AppStream-8.4.0.GA:python3-lxml-debuginfo-0:4.2.3-2.el8.s390x",
            "AppStream-8.4.0.GA:python3-lxml-debuginfo-0:4.2.3-2.el8.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "python-lxml: mXSS due to the use of improper parser"
    }
  ]
}


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