cnvd - cnvd-2018-05580

cnvd-2018-05580

Vulnerability from cnvd

Title: PyCrypto信息泄露漏洞

Description:

PyCrypto是一个使用Python编写的加密工具包，它包含了MD5、AES、DES3等加密算法。

PyCrypto 2.6.1及之前版本中的lib/Crypto/PublicKey/ElGamal.py文件存在安全漏洞，该漏洞源于程序生成了较弱的ElGamal密钥参数。攻击者可通过读取密文数据利用该漏洞获取敏感信息。

Severity: 中

Patch Name: PyCrypto信息泄露漏洞的补丁

Patch Description:

PyCrypto是一个使用Python编写的加密工具包，它包含了MD5、AES、DES3等加密算法。

PyCrypto 2.6.1及之前版本中的lib/Crypto/PublicKey/ElGamal.py文件存在安全漏洞，该漏洞源于程序生成了较弱的ElGamal密钥参数。攻击者可通过读取密文数据利用该漏洞获取敏感信息。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://github.com/dlitz/pycrypto/issues/253

Reference: https://github.com/dlitz/pycrypto/issues/253

Impacted products

Name
PyCrypto PyCrypto <=2.6.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-6594"
    }
  },
  "description": "PyCrypto\u662f\u4e00\u4e2a\u4f7f\u7528Python\u7f16\u5199\u7684\u52a0\u5bc6\u5de5\u5177\u5305\uff0c\u5b83\u5305\u542b\u4e86MD5\u3001AES\u3001DES3\u7b49\u52a0\u5bc6\u7b97\u6cd5\u3002\r\n\r\nPyCrypto 2.6.1\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u7684lib/Crypto/PublicKey/ElGamal.py\u6587\u4ef6\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u751f\u6210\u4e86\u8f83\u5f31\u7684ElGamal\u5bc6\u94a5\u53c2\u6570\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u8bfb\u53d6\u5bc6\u6587\u6570\u636e\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u654f\u611f\u4fe1\u606f\u3002",
  "discovererName": "unknow",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://github.com/dlitz/pycrypto/issues/253",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-05580",
  "openTime": "2018-03-19",
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  "patchName": "PyCrypto\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "PyCrypto PyCrypto \u003c=2.6.1"
  },
  "referenceLink": "https://github.com/dlitz/pycrypto/issues/253",
  "serverity": "\u4e2d",
  "submitTime": "2018-02-06",
  "title": "PyCrypto\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e"
}

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

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.

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

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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.

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