Vulnerability-Lookup

CNVD-2018-05552

Vulnerability from cnvd - Published: 2018-03-19

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 – Updated: 2024-08-05 06:17

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.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

4 references

URL	Tags
https://github.com/weikengchen/attack-on-libgcryp…	x_refsource_MISC
https://lists.gnupg.org/pipermail/gcrypt-devel/20…	x_refsource_MISC
https://github.com/weikengchen/attack-on-libgcryp…	x_refsource_MISC
https://www.oracle.com/security-alerts/cpujan2020.html	x_refsource_MISC

Date Public

2018-02-07 00:00

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.