RHSA-2024:4054

Vulnerability from csaf_redhat - Published: 2024-06-24 01:08 - Updated: 2026-04-01 19:04
Summary
Red Hat Security Advisory: Red Hat OpenStack Platform 16.2 (python-gunicorn) security update
Severity
Important
Notes
Topic: An update for python-gunicorn is now available for Red Hat OpenStack Platform 16.2 (Train). Red Hat Product Security has rated this update as having a security impact of Important. 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: Gunicorn (Green Unicorn) is a Python WSGI HTTP server for UNIX. Security Fix(es): * HTTP Request Smuggling due to improper validation of Transfer-Encoding headers (CVE-2024-1135) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in 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.
CVE-2024-1135

An HTTP Request Smuggling vulnerability was found in Gunicorn. By crafting requests with conflicting Transfer-Encoding headers, attackers can bypass security restrictions and access restricted endpoints. This issue is due to Gunicorn's handling of Transfer-Encoding headers, where it incorrectly processes requests with multiple, conflicting Transfer-Encoding headers, treating them as chunked regardless of the final encoding specified. This vulnerability allows for a range of attacks, including cache poisoning, session manipulation, and data exposure.

7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Affected products
Product Identifier Version Remediation
Unresolved product id: 8Base-RHOS-16.2:python-gunicorn-0:19.9.0-11.el8ost.src —
Vendor Fix fix
Workaround
Unresolved product id: 8Base-RHOS-16.2:python3-gunicorn-0:19.9.0-11.el8ost.noarch —
Vendor Fix fix
Workaround
Threats
Impact Important
References
To clipboard 

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "An update for python-gunicorn is now available for Red Hat OpenStack\nPlatform 16.2 (Train).\n\nRed Hat Product Security has rated this update as having a security impact\nof Important. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available for each vulnerability\nfrom the CVE link(s) in the References section.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "Gunicorn (Green Unicorn) is a Python WSGI HTTP server for UNIX.\n\nSecurity Fix(es):\n\n* HTTP Request Smuggling due to improper validation of Transfer-Encoding\nheaders (CVE-2024-1135)\n\nFor more details about the security issue(s), including the impact, a CVSS\nscore, acknowledgments, and other related information, refer to the CVE\npage listed in 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"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://access.redhat.com/errata/RHSA-2024:4054",
        "url": "https://access.redhat.com/errata/RHSA-2024:4054"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#important",
        "url": "https://access.redhat.com/security/updates/classification/#important"
      },
      {
        "category": "external",
        "summary": "2275280",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2275280"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2024/rhsa-2024_4054.json"
      }
    ],
    "title": "Red Hat Security Advisory: Red Hat OpenStack Platform 16.2 (python-gunicorn) security update",
    "tracking": {
      "current_release_date": "2026-04-01T19:04:41+00:00",
      "generator": {
        "date": "2026-04-01T19:04:41+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.7.4"
        }
      },
      "id": "RHSA-2024:4054",
      "initial_release_date": "2024-06-24T01:08:31+00:00",
      "revision_history": [
        {
          "date": "2024-06-24T01:08:31+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2024-06-24T01:08:31+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2026-04-01T19:04:41+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat OpenStack Platform 16.2",
                "product": {
                  "name": "Red Hat OpenStack Platform 16.2",
                  "product_id": "8Base-RHOS-16.2",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:openstack:16.2::el8"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat OpenStack Platform"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "python-gunicorn-0:19.9.0-11.el8ost.src",
                "product": {
                  "name": "python-gunicorn-0:19.9.0-11.el8ost.src",
                  "product_id": "python-gunicorn-0:19.9.0-11.el8ost.src",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/python-gunicorn@19.9.0-11.el8ost?arch=src"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "src"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "python3-gunicorn-0:19.9.0-11.el8ost.noarch",
                "product": {
                  "name": "python3-gunicorn-0:19.9.0-11.el8ost.noarch",
                  "product_id": "python3-gunicorn-0:19.9.0-11.el8ost.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/python3-gunicorn@19.9.0-11.el8ost?arch=noarch"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "noarch"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python-gunicorn-0:19.9.0-11.el8ost.src as a component of Red Hat OpenStack Platform 16.2",
          "product_id": "8Base-RHOS-16.2:python-gunicorn-0:19.9.0-11.el8ost.src"
        },
        "product_reference": "python-gunicorn-0:19.9.0-11.el8ost.src",
        "relates_to_product_reference": "8Base-RHOS-16.2"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python3-gunicorn-0:19.9.0-11.el8ost.noarch as a component of Red Hat OpenStack Platform 16.2",
          "product_id": "8Base-RHOS-16.2:python3-gunicorn-0:19.9.0-11.el8ost.noarch"
        },
        "product_reference": "python3-gunicorn-0:19.9.0-11.el8ost.noarch",
        "relates_to_product_reference": "8Base-RHOS-16.2"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2024-1135",
      "cwe": {
        "id": "CWE-444",
        "name": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request/Response Smuggling\u0027)"
      },
      "discovery_date": "2024-04-16T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2275280"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "An HTTP Request Smuggling vulnerability was found in Gunicorn. By crafting requests with conflicting Transfer-Encoding headers, attackers can bypass security restrictions and access restricted endpoints. This issue is due to Gunicorn\u0027s handling of Transfer-Encoding headers, where it incorrectly processes requests with multiple, conflicting Transfer-Encoding headers, treating them as chunked regardless of the final encoding specified. This vulnerability allows for a range of attacks, including cache poisoning, session manipulation, and data exposure.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "python-gunicorn: HTTP Request Smuggling due to improper validation of Transfer-Encoding headers",
          "title": "Vulnerability summary"
        },
        {
          "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": [
          "8Base-RHOS-16.2:python-gunicorn-0:19.9.0-11.el8ost.src",
          "8Base-RHOS-16.2:python3-gunicorn-0:19.9.0-11.el8ost.noarch"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2024-1135"
        },
        {
          "category": "external",
          "summary": "RHBZ#2275280",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2275280"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2024-1135",
          "url": "https://www.cve.org/CVERecord?id=CVE-2024-1135"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-1135",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-1135"
        },
        {
          "category": "external",
          "summary": "https://github.com/advisories/GHSA-w3h3-4rj7-4ph4",
          "url": "https://github.com/advisories/GHSA-w3h3-4rj7-4ph4"
        },
        {
          "category": "external",
          "summary": "https://github.com/benoitc/gunicorn/commit/ac29c9b0a758d21f1e0fb3b3457239e523fa9f1d",
          "url": "https://github.com/benoitc/gunicorn/commit/ac29c9b0a758d21f1e0fb3b3457239e523fa9f1d"
        },
        {
          "category": "external",
          "summary": "https://huntr.com/bounties/22158e34-cfd5-41ad-97e0-a780773d96c1",
          "url": "https://huntr.com/bounties/22158e34-cfd5-41ad-97e0-a780773d96c1"
        }
      ],
      "release_date": "2024-04-15T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2024-06-24T01:08:31+00:00",
          "details": "For details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "8Base-RHOS-16.2:python-gunicorn-0:19.9.0-11.el8ost.src",
            "8Base-RHOS-16.2:python3-gunicorn-0:19.9.0-11.el8ost.noarch"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2024:4054"
        },
        {
          "category": "workaround",
          "details": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.",
          "product_ids": [
            "8Base-RHOS-16.2:python-gunicorn-0:19.9.0-11.el8ost.src",
            "8Base-RHOS-16.2:python3-gunicorn-0:19.9.0-11.el8ost.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
          },
          "products": [
            "8Base-RHOS-16.2:python-gunicorn-0:19.9.0-11.el8ost.src",
            "8Base-RHOS-16.2:python3-gunicorn-0:19.9.0-11.el8ost.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "python-gunicorn: HTTP Request Smuggling due to improper validation of Transfer-Encoding headers"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.