pysec - pysec-2018-97

pysec-2018-97

Vulnerability from pysec

Published

2018-02-03 15:29

Modified

2021-08-27 03:22

Details

lib/Crypto/PublicKey/ElGamal.py in PyCrypto through 2.6.1 generates weak ElGamal key parameters, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not have semantic security in face of a ciphertext-only attack). The Decisional Diffie-Hellman (DDH) assumption does not hold for PyCrypto's ElGamal implementation.

Impacted products

Name	purl
pycrypto	pkg:pypi/pycrypto

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pycrypto",
        "purl": "pkg:pypi/pycrypto"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.9a2",
        "1.9a5",
        "1.9a6",
        "2.0",
        "2.0.1",
        "2.1.0",
        "2.2",
        "2.3",
        "2.4",
        "2.4.1",
        "2.5",
        "2.6",
        "2.6.1"
      ]
    }
  ],
  "aliases": [
    "CVE-2018-6594",
    "GHSA-6528-wvf6-f6qg"
  ],
  "details": "lib/Crypto/PublicKey/ElGamal.py in PyCrypto through 2.6.1 generates weak ElGamal key parameters, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not have semantic security in face of a ciphertext-only attack). The Decisional Diffie-Hellman (DDH) assumption does not hold for PyCrypto\u0027s ElGamal implementation.",
  "id": "PYSEC-2018-97",
  "modified": "2021-08-27T03:22:16.704345Z",
  "published": "2018-02-03T15:29:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/TElgamal/attack-on-pycrypto-elgamal"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/dlitz/pycrypto/issues/253"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2018/02/msg00018.html"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3616-1/"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3616-2/"
    },
    {
      "type": "ADVISORY",
      "url": "https://security.gentoo.org/glsa/202007-62"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-6528-wvf6-f6qg"
    }
  ]
}

CVE-2018-6594 (GCVE-0-2018-6594)

Vulnerability from cvelistv5

Published

2018-02-03 03:00

Modified

2024-08-05 06:10

Severity ?

CWE

Summary

References

URL

Tags

	https://github.com/TElgamal/attack-on-pycrypto-elgamal	x_refsource_MISC
	https://usn.ubuntu.com/3616-1/	vendor-advisory, x_refsource_UBUNTU
	https://github.com/dlitz/pycrypto/issues/253	x_refsource_MISC
	https://lists.debian.org/debian-lts-announce/2018/02/msg00018.html	mailing-list, x_refsource_MLIST
	https://usn.ubuntu.com/3616-2/	vendor-advisory, x_refsource_UBUNTU
	https://security.gentoo.org/glsa/202007-62	vendor-advisory, x_refsource_GENTOO

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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        "providerMetadata": {
          "dateUpdated": "2024-08-05T06:10:10.652Z",
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        "references": [
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            "url": "https://github.com/TElgamal/attack-on-pycrypto-elgamal"
          },
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            "url": "https://usn.ubuntu.com/3616-1/"
          },
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              "x_refsource_MISC",
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            "url": "https://github.com/dlitz/pycrypto/issues/253"
          },
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            ],
            "url": "https://lists.debian.org/debian-lts-announce/2018/02/msg00018.html"
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          }
        ],
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      }
    ],
    "cna": {
      "affected": [
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          "vendor": "n/a",
          "versions": [
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        }
      ],
      "datePublic": "2018-02-02T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "lib/Crypto/PublicKey/ElGamal.py in PyCrypto through 2.6.1 generates weak ElGamal key parameters, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not have semantic security in face of a ciphertext-only attack). The Decisional Diffie-Hellman (DDH) assumption does not hold for PyCrypto\u0027s ElGamal implementation."
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      "problemTypes": [
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      "providerMetadata": {
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        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
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      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/TElgamal/attack-on-pycrypto-elgamal"
        },
        {
          "name": "USN-3616-1",
          "tags": [
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          "url": "https://usn.ubuntu.com/3616-1/"
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          ],
          "url": "https://security.gentoo.org/glsa/202007-62"
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      "x_legacyV4Record": {
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                      "product_name": "n/a",
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                "vendor_name": "n/a"
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        "description": {
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              "lang": "eng",
              "value": "lib/Crypto/PublicKey/ElGamal.py in PyCrypto through 2.6.1 generates weak ElGamal key parameters, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not have semantic security in face of a ciphertext-only attack). The Decisional Diffie-Hellman (DDH) assumption does not hold for PyCrypto\u0027s ElGamal implementation."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
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                  "value": "n/a"
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        },
        "references": {
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            {
              "name": "https://github.com/TElgamal/attack-on-pycrypto-elgamal",
              "refsource": "MISC",
              "url": "https://github.com/TElgamal/attack-on-pycrypto-elgamal"
            },
            {
              "name": "USN-3616-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3616-1/"
            },
            {
              "name": "https://github.com/dlitz/pycrypto/issues/253",
              "refsource": "MISC",
              "url": "https://github.com/dlitz/pycrypto/issues/253"
            },
            {
              "name": "[debian-lts-announce] 20180215 [SECURITY] [DLA 1283-1] python-crypto security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2018/02/msg00018.html"
            },
            {
              "name": "USN-3616-2",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3616-2/"
            },
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              "url": "https://security.gentoo.org/glsa/202007-62"
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  "cveMetadata": {
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    "dateReserved": "2018-02-02T00:00:00",
    "dateUpdated": "2024-08-05T06:10:10.652Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

ghsa-6528-wvf6-f6qg

Vulnerability from github

Published

2018-07-12 20:29

Modified

2024-10-18 21:58

Severity ?

7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Summary

Pycrypto generates weak key parameters

Details

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pycrypto"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "2.6.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2018-6594"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-326"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T21:18:02Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "lib/Crypto/PublicKey/ElGamal.py in PyCrypto through 2.6.1 generates weak ElGamal key parameters, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not have semantic security in face of a ciphertext-only attack). The Decisional Diffie-Hellman (DDH) assumption does not hold for PyCrypto\u0027s ElGamal implementation.",
  "id": "GHSA-6528-wvf6-f6qg",
  "modified": "2024-10-18T21:58:31Z",
  "published": "2018-07-12T20:29:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-6594"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dlitz/pycrypto/issues/253"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TElgamal/attack-on-pycrypto-elgamal"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-6528-wvf6-f6qg"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/dlitz/pycrypto"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/pycrypto/PYSEC-2018-97.yaml"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2018/02/msg00018.html"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202007-62"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3616-1"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3616-2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Pycrypto generates weak key parameters"
}

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.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
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-2018-97

Vulnerability from pysec

CVE-2018-6594 (GCVE-0-2018-6594)

Vulnerability from cvelistv5

ghsa-6528-wvf6-f6qg

Vulnerability from github

Tags

Sightings

Nomenclature