pysec - pysec-2022-160

pysec-2022-160

Vulnerability from pysec

Published

2022-03-03 21:15

Modified

2022-03-10 17:35

Details

Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0, Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH version identifier. This ends up with a buffer using all the available memory. The attach is a simple as nc -rv localhost 22 < /dev/zero. A patch is available in version 22.2.0. There are currently no known workarounds.

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "twisted",
        "purl": "pkg:pypi/twisted"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "89c395ee794e85a9657b112c4351417850330ef9"
            }
          ],
          "repo": "https://github.com/twisted/twisted",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "21.7.0"
            },
            {
              "fixed": "22.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "21.7.0",
        "22.1.0",
        "22.1.0rc1",
        "22.2.0rc1"
      ]
    }
  ],
  "aliases": [
    "CVE-2022-21716",
    "GHSA-rv6r-3f5q-9rgx"
  ],
  "details": "Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0, Twisted SSH client and server implement is able to accept an infinite amount of data for the peer\u0027s SSH version identifier. This ends up with a buffer using all the available memory. The attach is a simple as `nc -rv localhost 22 \u003c /dev/zero`. A patch is available in version 22.2.0. There are currently no known workarounds.",
  "id": "PYSEC-2022-160",
  "modified": "2022-03-10T17:35:00.079970Z",
  "published": "2022-03-03T21:15:00Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/twisted/twisted/commit/89c395ee794e85a9657b112c4351417850330ef9"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgx"
    },
    {
      "type": "WEB",
      "url": "https://twistedmatrix.com/trac/ticket/10284"
    },
    {
      "type": "WEB",
      "url": "https://github.com/twisted/twisted/releases/tag/twisted-22.2.0"
    }
  ]
}

ghsa-rv6r-3f5q-9rgx

Vulnerability from github

Published

2022-03-03 19:02

Modified

2024-11-18 22:50

Severity ?

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Summary

Twisted SSH client and server deny of service during SSH handshake.

Details

Impact

The Twisted SSH client and server implementation naively accepted an infinite amount of data for the peer's SSH version identifier.

A malicious peer can trivially craft a request that uses all available memory and crash the server, resulting in denial of service. The attack is as simple as nc -rv localhost 22 < /dev/zero.

Patches

The issue was fix in GitHub commit https://github.com/twisted/twisted/commit/98387b39e9f0b21462f6abc7a1325dc370fcdeb1

A fix is available in Twisted 22.2.0.

Workarounds

Limit access to the SSH server only to trusted source IP addresses.
Connect over SSH only to trusted destination IP addresses.

References

Reported at https://twistedmatrix.com/trac/ticket/10284 Discussions at https://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgx

For more information

Found by vin01

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "twisted"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "21.7.0"
            },
            {
              "fixed": "22.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-21716"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-120",
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-03-03T19:02:08Z",
    "nvd_published_at": "2022-03-03T21:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nThe Twisted SSH client and server implementation naively accepted an infinite amount of data for the  peer\u0027s SSH version identifier.\n\nA malicious peer can trivially craft a request that uses all available memory and crash the server, resulting in denial of service. The attack is as simple as `nc -rv localhost 22 \u003c /dev/zero`.\n\n### Patches\n\nThe issue was fix in GitHub commit https://github.com/twisted/twisted/commit/98387b39e9f0b21462f6abc7a1325dc370fcdeb1\n\nA fix is available in Twisted 22.2.0.\n\n### Workarounds\n\n* Limit access to the SSH server only to trusted source IP addresses.\n* Connect over SSH only to trusted destination IP addresses.\n\n### References\n\nReported at https://twistedmatrix.com/trac/ticket/10284\nDiscussions at https://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgx\n\n### For more information\n\nFound by vin01",
  "id": "GHSA-rv6r-3f5q-9rgx",
  "modified": "2024-11-18T22:50:32Z",
  "published": "2022-03-03T19:02:08Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-21716"
    },
    {
      "type": "WEB",
      "url": "https://github.com/twisted/twisted/commit/89c395ee794e85a9657b112c4351417850330ef9"
    },
    {
      "type": "WEB",
      "url": "https://github.com/twisted/twisted/commit/98387b39e9f0b21462f6abc7a1325dc370fcdeb1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/twisted/PYSEC-2022-160.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/twisted/twisted"
    },
    {
      "type": "WEB",
      "url": "https://github.com/twisted/twisted/releases/tag/twisted-22.2.0"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00009.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202301-02"
    },
    {
      "type": "WEB",
      "url": "https://twistedmatrix.com/trac/ticket/10284"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Twisted SSH client and server deny of service during SSH handshake."
}

cve-2022-21716

Vulnerability from cvelistv5

Published

2022-03-03 00:00

Modified

2024-08-03 02:53

Severity ?

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

Buffer Overflow in Twisted

References

▼	URL	Tags
	https://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgx
	https://github.com/twisted/twisted/commit/89c395ee794e85a9657b112c4351417850330ef9
	https://github.com/twisted/twisted/releases/tag/twisted-22.2.0
	https://twistedmatrix.com/trac/ticket/10284
	https://lists.debian.org/debian-lts-announce/2022/03/msg00009.html	mailing-list
	https://www.oracle.com/security-alerts/cpuapr2022.html
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/	vendor-advisory
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/	vendor-advisory
	https://security.gentoo.org/glsa/202301-02	vendor-advisory

Impacted products

▼	Vendor	Product
	twisted	twisted

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T02:53:34.846Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgx"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/twisted/twisted/commit/89c395ee794e85a9657b112c4351417850330ef9"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/twisted/twisted/releases/tag/twisted-22.2.0"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://twistedmatrix.com/trac/ticket/10284"
          },
          {
            "name": "[debian-lts-announce] 20220308 [SECURITY] [DLA 2938-1] twisted security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00009.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
          },
          {
            "name": "FEDORA-2022-71b66d4747",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/"
          },
          {
            "name": "FEDORA-2022-9a489fa494",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/"
          },
          {
            "name": "GLSA-202301-02",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202301-02"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "twisted",
          "vendor": "twisted",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 22.2.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0, Twisted SSH client and server implement is able to accept an infinite amount of data for the peer\u0027s SSH version identifier. This ends up with a buffer using all the available memory. The attach is a simple as `nc -rv localhost 22 \u003c /dev/zero`. A patch is available in version 22.2.0. There are currently no known workarounds."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-120",
              "description": "CWE-120: Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-01-11T00:00:00",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "url": "https://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgx"
        },
        {
          "url": "https://github.com/twisted/twisted/commit/89c395ee794e85a9657b112c4351417850330ef9"
        },
        {
          "url": "https://github.com/twisted/twisted/releases/tag/twisted-22.2.0"
        },
        {
          "url": "https://twistedmatrix.com/trac/ticket/10284"
        },
        {
          "name": "[debian-lts-announce] 20220308 [SECURITY] [DLA 2938-1] twisted security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00009.html"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
        },
        {
          "name": "FEDORA-2022-71b66d4747",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/"
        },
        {
          "name": "FEDORA-2022-9a489fa494",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/"
        },
        {
          "name": "GLSA-202301-02",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/202301-02"
        }
      ],
      "source": {
        "advisory": "GHSA-rv6r-3f5q-9rgx",
        "discovery": "UNKNOWN"
      },
      "title": "Buffer Overflow in Twisted"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2022-21716",
    "datePublished": "2022-03-03T00:00:00",
    "dateReserved": "2021-11-16T00:00:00",
    "dateUpdated": "2024-08-03T02:53:34.846Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

pysec-2022-160

Vulnerability from pysec

ghsa-rv6r-3f5q-9rgx

Vulnerability from github

Impact

Patches

Workarounds

References

For more information

cve-2022-21716

Vulnerability from cvelistv5

Tags

Sightings

Nomenclature