cnvd - cnvd-2017-21505

cnvd-2017-21505

Vulnerability from cnvd

Title: Libgcrypt信息泄露漏洞（CNVD-2017-21505）

Description:

Libgcrypt是GNU计划开发的一个基于GnuPG代码的通用加密库。该库实现了各种加密算法，包括对称密码、哈希算法、公开密钥算法等。

Libgcrypt 1.7.7及之前的版本中存在信息泄露漏洞。攻击者可利用该漏洞获取敏感信息。

Severity: 中

Patch Name: Libgcrypt信息泄露漏洞（CNVD-2017-21505）的补丁

Patch Description:

Libgcrypt是GNU计划开发的一个基于GnuPG代码的通用加密库。该库实现了各种加密算法，包括对称密码、哈希算法、公开密钥算法等。

Libgcrypt 1.7.7及之前的版本中存在信息泄露漏洞。攻击者可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:

用户可联系供应商获得补丁信息： https://gnupg.org/related_software/libgcrypt/

Reference: http://www.securityfocus.com/bid/99338/

Impacted products

Name
['GNU libgcrypt', 'GnuPG Libgcrypt <1.7.7']

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "99338"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-7526"
    }
  },
  "description": "Libgcrypt\u662fGNU\u8ba1\u5212\u5f00\u53d1\u7684\u4e00\u4e2a\u57fa\u4e8eGnuPG\u4ee3\u7801\u7684\u901a\u7528\u52a0\u5bc6\u5e93\u3002\u8be5\u5e93\u5b9e\u73b0\u4e86\u5404\u79cd\u52a0\u5bc6\u7b97\u6cd5\uff0c\u5305\u62ec\u5bf9\u79f0\u5bc6\u7801\u3001\u54c8\u5e0c\u7b97\u6cd5\u3001\u516c\u5f00\u5bc6\u94a5\u7b97\u6cd5\u7b49\u3002\r\n\r\nLibgcrypt 1.7.7\u53ca\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u5b58\u5728\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u654f\u611f\u4fe1\u606f\u3002",
  "discovererName": "Libgcrypt project",
  "formalWay": "\u7528\u6237\u53ef\u8054\u7cfb\u4f9b\u5e94\u5546\u83b7\u5f97\u8865\u4e01\u4fe1\u606f\uff1a\r\nhttps://gnupg.org/related_software/libgcrypt/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-21505",
  "openTime": "2017-08-17",
  "patchDescription": "Libgcrypt\u662fGNU\u8ba1\u5212\u5f00\u53d1\u7684\u4e00\u4e2a\u57fa\u4e8eGnuPG\u4ee3\u7801\u7684\u901a\u7528\u52a0\u5bc6\u5e93\u3002\u8be5\u5e93\u5b9e\u73b0\u4e86\u5404\u79cd\u52a0\u5bc6\u7b97\u6cd5\uff0c\u5305\u62ec\u5bf9\u79f0\u5bc6\u7801\u3001\u54c8\u5e0c\u7b97\u6cd5\u3001\u516c\u5f00\u5bc6\u94a5\u7b97\u6cd5\u7b49\u3002\r\n\r\nLibgcrypt 1.7.7\u53ca\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u5b58\u5728\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u654f\u611f\u4fe1\u606f\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Libgcrypt\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2017-21505\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "GNU libgcrypt",
      "GnuPG Libgcrypt \u003c1.7.7"
    ]
  },
  "referenceLink": "http://www.securityfocus.com/bid/99338/",
  "serverity": "\u4e2d",
  "submitTime": "2017-07-03",
  "title": "Libgcrypt\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2017-21505\uff09"
}

CVE-2017-7526 (GCVE-0-2017-7526)

Vulnerability from cvelistv5

Published

2018-07-26 13:00

Modified

2024-08-05 16:04

Severity ?

6.1 (Medium) - CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N

CWE

CWE-200

Summary

libgcrypt before version 1.7.8 is vulnerable to a cache side-channel attack resulting into a complete break of RSA-1024 while using the left-to-right method for computing the sliding-window expansion. The same attack is believed to work on RSA-2048 with moderately more computation. This side-channel requires that attacker can run arbitrary software on the hardware where the private RSA key is used.

References

▼	URL	Tags
	https://usn.ubuntu.com/3733-1/	vendor-advisory, x_refsource_UBUNTU
	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7526	x_refsource_CONFIRM
	http://www.securitytracker.com/id/1038915	vdb-entry, x_refsource_SECTRACK
	https://www.debian.org/security/2017/dsa-3960	vendor-advisory, x_refsource_DEBIAN
	https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=78130828e9a140a9de4dafadbc844dbb64cb709a	x_refsource_CONFIRM
	https://www.debian.org/security/2017/dsa-3901	vendor-advisory, x_refsource_DEBIAN
	https://usn.ubuntu.com/3733-2/	vendor-advisory, x_refsource_UBUNTU
	https://eprint.iacr.org/2017/627	x_refsource_MISC
	http://www.securityfocus.com/bid/99338	vdb-entry, x_refsource_BID
	https://lists.gnupg.org/pipermail/gnupg-announce/2017q2/000408.html	mailing-list, x_refsource_MLIST
	https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=e6a3dc9900433bbc8ad362a595a3837318c28fa9	x_refsource_CONFIRM
	https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=8725c99ffa41778f382ca97233183bcd687bb0ce	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	GnuPG	libgcrypt	Version: 1.7.8

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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