github - GHSA-wqc8-x2pr-7jqh

GHSA-WQC8-X2PR-7JQH

Vulnerability from github – Published: 2023-07-10 21:53 – Updated: 2023-07-11 19:40

Summary

RestrictedPython vulnerable to arbitrary code execution via stack frame sandbox escape

Details

Impact

RestrictedPython does not check access to stack frames and their attributes. Stack frames are accessible within at least generators and generator expressions, which are allowed inside RestrictedPython. An attacker with access to a RestrictedPython environment can write code that gets the current stack frame in a generator and then walk the stack all the way beyond the RestrictedPython invocation boundary, thus breaking out of the restricted scope allowing the call of unrestricted Python code and therefore potentially allowing arbitrary code execution in the Python interpreter.

All RestrictedPython deployments that allow untrusted users to write Python code in the RestrictedPython environment are at risk. In terms of Zope and Plone, this would mean deployments where the administrator allows untrusted users to create and/or edit objects of type Script (Python), DTML Method, DTML Document or Zope Page Template. This is a non-default configuration and likely to be extremely rare.

Patches

The problem has been fixed in releases 5.3 and 6.1.

Workarounds

There is no workaround available. If you cannot upgrade to the latest release you should ensure the RestrictedPython environment is only available for trusted users.

References

RestrictedPython security advisory GHSA-wqc8-x2pr-7jqh

For more information

If you have any questions or comments about this advisory:

Open an issue in the RestrictedPython issue tracker
Email us at security@plone.org

Credits

Thanks for analysing and reporting the go to: - Nakul Choudhary (Quasar0147 on GitHub) - despawningbone on GitHub - Robert Xiao (nneonneo on GitHub)

Severity ?

8.4 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "RestrictedPython"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "RestrictedPython"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0a1.dev0"
            },
            {
              "fixed": "6.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "restrictedpython"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-37271"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-913"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-07-10T21:53:22Z",
    "nvd_published_at": "2023-07-11T18:15:20Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nRestrictedPython does not check access to stack frames and their attributes. Stack frames are accessible within at least generators and generator expressions, which are allowed inside RestrictedPython. An attacker with access to a RestrictedPython environment can write code that gets the current stack frame in a generator and then walk the stack all the way beyond the RestrictedPython invocation boundary, thus breaking out of the restricted scope allowing the call of unrestricted Python code and therefore potentially allowing arbitrary code execution in the Python interpreter.\n\nAll RestrictedPython deployments that allow untrusted users to write Python code in the RestrictedPython environment are at risk. In terms of Zope and Plone, this would mean deployments where the administrator allows untrusted users to create and/or edit objects of type `Script (Python)`, `DTML Method`, `DTML Document` or `Zope Page Template`. This is a non-default configuration and likely to be extremely rare.\n\n### Patches\n\nThe problem has been fixed in releases 5.3 and 6.1.\n\n### Workarounds\n\nThere is no workaround available. If you cannot upgrade to the latest release you should ensure the RestrictedPython environment is only available for trusted users.\n\n### References\n\n- [RestrictedPython security advisory GHSA-wqc8-x2pr-7jqh](https://github.com/zopefoundation/RestrictedPython/security/advisories/GHSA-wqc8-x2pr-7jqh)\n\n## For more information\n\nIf you have any questions or comments about this advisory:\n\n- Open an issue in the [RestrictedPython issue tracker](https://github.com/zopefoundation/RestrictedPython/issues)\n- Email us at [security@plone.org](mailto:security@plone.org)\n\n## Credits\n\nThanks for analysing and reporting the go to:\n- Nakul Choudhary (Quasar0147 on GitHub)\n- despawningbone on GitHub\n- Robert Xiao (nneonneo on GitHub)",
  "id": "GHSA-wqc8-x2pr-7jqh",
  "modified": "2023-07-11T19:40:20Z",
  "published": "2023-07-10T21:53:22Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/zopefoundation/RestrictedPython/security/advisories/GHSA-wqc8-x2pr-7jqh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-37271"
    },
    {
      "type": "WEB",
      "url": "https://github.com/zopefoundation/RestrictedPython/commit/c8eca66ae49081f0016d2e1f094c3d72095ef531"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/restrictedpython/PYSEC-2023-118.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/zopefoundation/RestrictedPython"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "RestrictedPython vulnerable to arbitrary code execution via stack frame sandbox escape"
}

CVE-2023-37271 (GCVE-0-2023-37271)

Vulnerability from cvelistv5 – Published: 2023-07-11 17:14 – Updated: 2024-11-07 17:09

Summary

RestrictedPython is a tool that helps to define a subset of the Python language which allows users to provide a program input into a trusted environment. RestrictedPython does not check access to stack frames and their attributes. Stack frames are accessible within at least generators and generator expressions, which are allowed inside RestrictedPython. Prior to versions 6.1 and 5.3, an attacker with access to a RestrictedPython environment can write code that gets the current stack frame in a generator and then walk the stack all the way beyond the RestrictedPython invocation boundary, thus breaking out of the restricted sandbox and potentially allowing arbitrary code execution in the Python interpreter. All RestrictedPython deployments that allow untrusted users to write Python code in the RestrictedPython environment are at risk. In terms of Zope and Plone, this would mean deployments where the administrator allows untrusted users to create and/or edit objects of type `Script (Python)`, `DTML Method`, `DTML Document` or `Zope Page Template`. This is a non-default configuration and likely to be extremely rare. The problem has been fixed in versions 6.1 and 5.3.

Severity ?

8.4 (High)


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

CWE

CWE-913 - Improper Control of Dynamically-Managed Code Resources

Assigner

GitHub_M

References

URL

Tags

	https://github.com/zopefoundation/RestrictedPytho…	x_refsource_CONFIRM
	https://github.com/zopefoundation/RestrictedPytho…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	zopefoundation	RestrictedPython	Affected: >= 6.0a1.dev0, < 6.1 Affected: < 5.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T17:09:33.893Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/zopefoundation/RestrictedPython/security/advisories/GHSA-wqc8-x2pr-7jqh",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/zopefoundation/RestrictedPython/security/advisories/GHSA-wqc8-x2pr-7jqh"
          },
          {
            "name": "https://github.com/zopefoundation/RestrictedPython/commit/c8eca66ae49081f0016d2e1f094c3d72095ef531",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/zopefoundation/RestrictedPython/commit/c8eca66ae49081f0016d2e1f094c3d72095ef531"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-37271",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-07T17:09:29.321721Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-07T17:09:40.101Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "RestrictedPython",
          "vendor": "zopefoundation",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 6.0a1.dev0, \u003c 6.1"
            },
            {
              "status": "affected",
              "version": "\u003c 5.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "RestrictedPython is a tool that helps to define a subset of the Python language which allows users to provide a program input into a trusted environment. RestrictedPython does not check access to stack frames and their attributes. Stack frames are accessible within at least generators and generator expressions, which are allowed inside RestrictedPython. Prior to versions 6.1 and 5.3, an attacker with access to a RestrictedPython environment can write code that gets the current stack frame in a generator and then walk the stack all the way beyond the RestrictedPython invocation boundary, thus breaking out of the restricted sandbox and potentially allowing arbitrary code execution in the Python interpreter. All RestrictedPython deployments that allow untrusted users to write Python code in the RestrictedPython environment are at risk. In terms of Zope and Plone, this would mean deployments where the administrator allows untrusted users to create and/or edit objects of type `Script (Python)`, `DTML Method`, `DTML Document` or `Zope Page Template`. This is a non-default configuration and likely to be extremely rare. The problem has been fixed in versions 6.1 and 5.3."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 8.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-913",
              "description": "CWE-913: Improper Control of Dynamically-Managed Code Resources",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-07-11T17:14:11.110Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/zopefoundation/RestrictedPython/security/advisories/GHSA-wqc8-x2pr-7jqh",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/zopefoundation/RestrictedPython/security/advisories/GHSA-wqc8-x2pr-7jqh"
        },
        {
          "name": "https://github.com/zopefoundation/RestrictedPython/commit/c8eca66ae49081f0016d2e1f094c3d72095ef531",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/zopefoundation/RestrictedPython/commit/c8eca66ae49081f0016d2e1f094c3d72095ef531"
        }
      ],
      "source": {
        "advisory": "GHSA-wqc8-x2pr-7jqh",
        "discovery": "UNKNOWN"
      },
      "title": "RestrictedPython vulnerable to arbitrary code execution via stack frame sandbox escape"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2023-37271",
    "datePublished": "2023-07-11T17:14:11.110Z",
    "dateReserved": "2023-06-29T19:35:26.440Z",
    "dateUpdated": "2024-11-07T17:09:40.101Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

PYSEC-2023-118

Vulnerability from pysec - Published: 2023-07-11 18:15 - Updated: 2023-07-19 20:24

Details

RestrictedPython is a tool that helps to define a subset of the Python language which allows users to provide a program input into a trusted environment. RestrictedPython does not check access to stack frames and their attributes. Stack frames are accessible within at least generators and generator expressions, which are allowed inside RestrictedPython. Prior to versions 6.1 and 5.3, an attacker with access to a RestrictedPython environment can write code that gets the current stack frame in a generator and then walk the stack all the way beyond the RestrictedPython invocation boundary, thus breaking out of the restricted sandbox and potentially allowing arbitrary code execution in the Python interpreter. All RestrictedPython deployments that allow untrusted users to write Python code in the RestrictedPython environment are at risk. In terms of Zope and Plone, this would mean deployments where the administrator allows untrusted users to create and/or edit objects of type Script (Python), DTML Method, DTML Document or Zope Page Template. This is a non-default configuration and likely to be extremely rare. The problem has been fixed in versions 6.1 and 5.3.

Impacted products

Name	purl
restrictedpython	pkg:pypi/restrictedpython

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "restrictedpython",
        "purl": "pkg:pypi/restrictedpython"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "c8eca66ae49081f0016d2e1f094c3d72095ef531"
            }
          ],
          "repo": "https://github.com/zopefoundation/RestrictedPython",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.4.2",
        "3.4.3",
        "3.5.0",
        "3.5.1",
        "3.5.2",
        "3.6.0",
        "3.6.0a1",
        "4.0",
        "4.0a1",
        "4.0a2",
        "4.0a3",
        "4.0b1",
        "4.0b2",
        "4.0b3",
        "4.0b4",
        "4.0b5",
        "4.0b6",
        "4.0b7",
        "4.0b8",
        "5.0",
        "5.1",
        "5.2",
        "5.2a1.dev0",
        "5.3a1.dev0"
      ]
    }
  ],
  "aliases": [
    "CVE-2023-37271",
    "GHSA-wqc8-x2pr-7jqh"
  ],
  "details": "RestrictedPython is a tool that helps to define a subset of the Python language which allows users to provide a program input into a trusted environment. RestrictedPython does not check access to stack frames and their attributes. Stack frames are accessible within at least generators and generator expressions, which are allowed inside RestrictedPython. Prior to versions 6.1 and 5.3, an attacker with access to a RestrictedPython environment can write code that gets the current stack frame in a generator and then walk the stack all the way beyond the RestrictedPython invocation boundary, thus breaking out of the restricted sandbox and potentially allowing arbitrary code execution in the Python interpreter. All RestrictedPython deployments that allow untrusted users to write Python code in the RestrictedPython environment are at risk. In terms of Zope and Plone, this would mean deployments where the administrator allows untrusted users to create and/or edit objects of type `Script (Python)`, `DTML Method`, `DTML Document` or `Zope Page Template`. This is a non-default configuration and likely to be extremely rare. The problem has been fixed in versions 6.1 and 5.3.",
  "id": "PYSEC-2023-118",
  "modified": "2023-07-19T20:24:12.944004+00:00",
  "published": "2023-07-11T18:15:00+00:00",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/zopefoundation/RestrictedPython/security/advisories/GHSA-wqc8-x2pr-7jqh"
    },
    {
      "type": "FIX",
      "url": "https://github.com/zopefoundation/RestrictedPython/commit/c8eca66ae49081f0016d2e1f094c3d72095ef531"
    }
  ]
}

Sightings

Author	Source	Type	Date

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

GHSA-WQC8-X2PR-7JQH

Impact

Patches

Workarounds

References

For more information

Credits

CVE-2023-37271 (GCVE-0-2023-37271)

PYSEC-2023-118

Tags

Sightings

Nomenclature