cnvd - cnvd-2018-05552

cnvd-2018-05552

Vulnerability from cnvd

Title: Libgcrypt信息泄露漏洞（CNVD-2018-05552）

Description:

Libgcrypt是作为GnuPG的独立模块开发的密码库。

1.8.2及更早版本的Libgcrypt存在信息泄露漏洞。该漏洞产生的原因是Libgcrypt中的cipher/elgamal.c用于直接加密消息时对明文编码不当。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

Formal description:

目前没有详细的解决方案提供： https://www.gnupg.org/software/libgcrypt/index.html

Reference: https://nvd.nist.gov/vuln/detail/CVE-2018-6829

Impacted products

Name
GnuPG Libgcrypt <1.8.2

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-6829"
    }
  },
  "description": "Libgcrypt\u662f\u4f5c\u4e3aGnuPG\u7684\u72ec\u7acb\u6a21\u5757\u5f00\u53d1\u7684\u5bc6\u7801\u5e93\u3002\r\n\r\n1.8.2\u53ca\u66f4\u65e9\u7248\u672c\u7684Libgcrypt\u5b58\u5728\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u4ea7\u751f\u7684\u539f\u56e0\u662fLibgcrypt\u4e2d\u7684cipher/elgamal.c\u7528\u4e8e\u76f4\u63a5\u52a0\u5bc6\u6d88\u606f\u65f6\u5bf9\u660e\u6587\u7f16\u7801\u4e0d\u5f53\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": "unknown",
  "formalWay": "\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u89e3\u51b3\u65b9\u6848\u63d0\u4f9b\uff1a\r\nhttps://www.gnupg.org/software/libgcrypt/index.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-05552",
  "openTime": "2018-03-19",
  "products": {
    "product": "GnuPG Libgcrypt \u003c1.8.2"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-6829",
  "serverity": "\u4e2d",
  "submitTime": "2018-02-08",
  "title": "Libgcrypt\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2018-05552\uff09"
}

CVE-2018-6829 (GCVE-0-2018-6829)

Vulnerability from cvelistv5

Published

2018-02-07 23:00

Modified

2024-08-05 06:17

Severity ?

CWE

Summary

cipher/elgamal.c in Libgcrypt through 1.8.2, when used to encrypt messages directly, improperly encodes plaintexts, 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 Libgcrypt's ElGamal implementation.

References

▼	URL	Tags
	https://github.com/weikengchen/attack-on-libgcrypt-elgamal/wiki	x_refsource_MISC
	https://lists.gnupg.org/pipermail/gcrypt-devel/2018-February/004394.html	x_refsource_MISC
	https://github.com/weikengchen/attack-on-libgcrypt-elgamal	x_refsource_MISC
	https://www.oracle.com/security-alerts/cpujan2020.html	x_refsource_MISC

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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