rhsa-2024_9150
Vulnerability from csaf_redhat
Published
2024-11-12 08:45
Modified
2024-11-24 14:48
Summary
Red Hat Security Advisory: python-jinja2 security update

Notes

Topic
An update for python-jinja2 is now available for Red Hat Enterprise Linux 9. 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
The python-jinja2 package contains Jinja2, a template engine written in pure Python. Jinja2 provides a Django inspired non-XML syntax but supports inline expressions and an optional sandboxed environment. Security Fix(es): * jinja2: accepts keys containing non-attribute characters (CVE-2024-34064) 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 9.5 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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      "text": "Moderate"
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    "category": "csaf_security_advisory",
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    "notes": [
      {
        "category": "summary",
        "text": "An update for python-jinja2 is now available for Red Hat Enterprise Linux 9.\n\nRed 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.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "The python-jinja2 package contains Jinja2, a template engine written in pure Python. Jinja2 provides a Django inspired non-XML syntax but supports inline expressions and an optional sandboxed environment. \n\nSecurity Fix(es):\n\n* jinja2: accepts keys containing non-attribute characters (CVE-2024-34064)\n\nFor 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.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 9.5 Release Notes linked from the References section.",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "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.",
        "title": "Terms of Use"
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      {
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        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2024/rhsa-2024_9150.json"
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    "title": "Red Hat Security Advisory: python-jinja2 security update",
    "tracking": {
      "current_release_date": "2024-11-24T14:48:50+00:00",
      "generator": {
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              {
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                "name": "Red Hat Enterprise Linux AppStream (v. 9)",
                "product": {
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          "product_id": "AppStream-9.5.0.GA:python-jinja2-0:2.11.3-6.el9.src"
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  "vulnerabilities": [
    {
      "cve": "CVE-2024-34064",
      "cwe": {
        "id": "CWE-79",
        "name": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)"
      },
      "discovery_date": "2024-05-07T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2279476"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "Jinja is an extensible templating engine. The `xmlattr` filter in affected versions of Jinja accepts keys containing non-attribute characters. XML/HTML attributes cannot contain spaces, `/`, `\u003e`, or `=`, as each would then be interpreted as starting a separate attribute. If an application accepts keys (as opposed to only values) as user input, and renders these in pages that other users see as well, an attacker could use this to inject other attributes and perform XSS. The fix for CVE-2024-22195 only addressed spaces but not other characters. Accepting keys as user input is now explicitly considered an unintended use case of the `xmlattr` filter, and code that does so without otherwise validating the input should be flagged as insecure, regardless of Jinja version. Accepting _values_ as user input continues to be safe. This vulnerability is fixed in 3.1.4.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "jinja2: accepts keys containing non-attribute characters",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "The fix for CVE-2024-22195 only addressed spaces, not other characters. Accepting keys as user input is now explicitly considered an unintended use case of the `xmlattr` filter, and code that does so without otherwise validating the input should be flagged as insecure, regardless of Jinja version. Accepting _values_ as user input continues to be safe.\n\nFence agents on RHEL 8 has been fixed as a part of https://access.redhat.com/errata/RHBA-2024:4238",
          "title": "Statement"
        },
        {
          "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.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "AppStream-9.5.0.GA:python-jinja2-0:2.11.3-6.el9.src",
          "AppStream-9.5.0.GA:python3-jinja2-0:2.11.3-6.el9.noarch"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2024-34064"
        },
        {
          "category": "external",
          "summary": "RHBZ#2279476",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2279476"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2024-34064",
          "url": "https://www.cve.org/CVERecord?id=CVE-2024-34064"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-34064",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-34064"
        },
        {
          "category": "external",
          "summary": "https://github.com/pallets/jinja/security/advisories/GHSA-h75v-3vvj-5mfj",
          "url": "https://github.com/pallets/jinja/security/advisories/GHSA-h75v-3vvj-5mfj"
        }
      ],
      "release_date": "2024-05-06T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2024-11-12T08:45:30+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-9.5.0.GA:python-jinja2-0:2.11.3-6.el9.src",
            "AppStream-9.5.0.GA:python3-jinja2-0:2.11.3-6.el9.noarch"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2024:9150"
        },
        {
          "category": "workaround",
          "details": "Do not accept user input as keys to the xmlattr filter without validation. See the statement above for more information.",
          "product_ids": [
            "AppStream-9.5.0.GA:python-jinja2-0:2.11.3-6.el9.src",
            "AppStream-9.5.0.GA:python3-jinja2-0:2.11.3-6.el9.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "AppStream-9.5.0.GA:python-jinja2-0:2.11.3-6.el9.src",
            "AppStream-9.5.0.GA:python3-jinja2-0:2.11.3-6.el9.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "jinja2: accepts keys containing non-attribute characters"
    }
  ]
}


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