cnvd - cnvd-2017-00450

cnvd-2017-00450

Vulnerability from cnvd

Title: OpenSSL ECDSA P-256私钥获取漏洞

Description:

OpenSSL是OpenSSL团队开发的一个开源的能够实现安全套接层（SSL v2/v3）和安全传输层（TLS v1）协议的通用加密库，它支持多种加密算法，包括对称密码、哈希算法、安全散列算法等。

OpenSSL中存在安全漏洞，该漏洞源于crypto/ec/ecdsa_ossl.c文件的‘ecdsa_sign_setup()’函数未能正确的设置BN_FLG_CONSTTIME标识。本地攻击者利用该漏洞实施cache-timing攻击，获取ECDSA P-256私钥。

Severity: 低

Patch Name: OpenSSL ECDSA P-256私钥获取漏洞的补丁

Patch Description:

OpenSSL中存在安全漏洞，该漏洞源于crypto/ec/ecdsa_ossl.c文件的‘ecdsa_sign_setup()’函数未能正确的设置BN_FLG_CONSTTIME标识。本地攻击者利用该漏洞实施cache-timing攻击，获取ECDSA P-256私钥。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:

目前厂商已经发布了升级补丁以修复此安全问题，详情请关注厂商主页： https://www.openssl.org/

Reference: http://securitytracker.com/id/1037575

Impacted products

Name
Openssl Openssl

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2016-7056"
    }
  },
  "description": "OpenSSL\u662fOpenSSL\u56e2\u961f\u5f00\u53d1\u7684\u4e00\u4e2a\u5f00\u6e90\u7684\u80fd\u591f\u5b9e\u73b0\u5b89\u5168\u5957\u63a5\u5c42\uff08SSL v2/v3\uff09\u548c\u5b89\u5168\u4f20\u8f93\u5c42\uff08TLS v1\uff09\u534f\u8bae\u7684\u901a\u7528\u52a0\u5bc6\u5e93\uff0c\u5b83\u652f\u6301\u591a\u79cd\u52a0\u5bc6\u7b97\u6cd5\uff0c\u5305\u62ec\u5bf9\u79f0\u5bc6\u7801\u3001\u54c8\u5e0c\u7b97\u6cd5\u3001\u5b89\u5168\u6563\u5217\u7b97\u6cd5\u7b49\u3002\r\n\r\nOpenSSL\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8ecrypto/ec/ecdsa_ossl.c\u6587\u4ef6\u7684\u2018ecdsa_sign_setup()\u2019\u51fd\u6570\u672a\u80fd\u6b63\u786e\u7684\u8bbe\u7f6eBN_FLG_CONSTTIME\u6807\u8bc6\u3002\u672c\u5730\u653b\u51fb\u8005\u5229\u7528\u8be5\u6f0f\u6d1e\u5b9e\u65bdcache-timing\u653b\u51fb\uff0c\u83b7\u53d6ECDSA P-256\u79c1\u94a5\u3002",
  "discovererName": "unknown",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u8be6\u60c5\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\uff1a\r\nhttps://www.openssl.org/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-00450",
  "openTime": "2017-01-16",
  "patchDescription": "OpenSSL\u662fOpenSSL\u56e2\u961f\u5f00\u53d1\u7684\u4e00\u4e2a\u5f00\u6e90\u7684\u80fd\u591f\u5b9e\u73b0\u5b89\u5168\u5957\u63a5\u5c42\uff08SSL v2/v3\uff09\u548c\u5b89\u5168\u4f20\u8f93\u5c42\uff08TLS v1\uff09\u534f\u8bae\u7684\u901a\u7528\u52a0\u5bc6\u5e93\uff0c\u5b83\u652f\u6301\u591a\u79cd\u52a0\u5bc6\u7b97\u6cd5\uff0c\u5305\u62ec\u5bf9\u79f0\u5bc6\u7801\u3001\u54c8\u5e0c\u7b97\u6cd5\u3001\u5b89\u5168\u6563\u5217\u7b97\u6cd5\u7b49\u3002\r\n\r\nOpenSSL\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8ecrypto/ec/ecdsa_ossl.c\u6587\u4ef6\u7684\u2018ecdsa_sign_setup()\u2019\u51fd\u6570\u672a\u80fd\u6b63\u786e\u7684\u8bbe\u7f6eBN_FLG_CONSTTIME\u6807\u8bc6\u3002\u672c\u5730\u653b\u51fb\u8005\u5229\u7528\u8be5\u6f0f\u6d1e\u5b9e\u65bdcache-timing\u653b\u51fb\uff0c\u83b7\u53d6ECDSA P-256\u79c1\u94a5\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": "OpenSSL ECDSA P-256\u79c1\u94a5\u83b7\u53d6\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Openssl Openssl"
  },
  "referenceLink": "http://securitytracker.com/id/1037575",
  "serverity": "\u4f4e",
  "submitTime": "2017-01-12",
  "title": "OpenSSL ECDSA P-256\u79c1\u94a5\u83b7\u53d6\u6f0f\u6d1e"
}

CVE-2016-7056 (GCVE-0-2016-7056)

Vulnerability from cvelistv5

Published

2018-09-10 16:00

Modified

2024-08-06 01:50

Severity ?

5.5 (Medium) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CWE

CWE-385

Summary

A timing attack flaw was found in OpenSSL 1.0.1u and before that could allow a malicious user with local access to recover ECDSA P-256 private keys.

References

▼	URL	Tags
	https://eprint.iacr.org/2016/1195	x_refsource_MISC
	https://access.redhat.com/errata/RHSA-2017:1801	vendor-advisory, x_refsource_REDHAT
	https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=8aed2a7548362e88e84a7feb795a3a97e8395008	x_refsource_CONFIRM
	https://access.redhat.com/errata/RHSA-2017:1413	vendor-advisory, x_refsource_REDHAT
	https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/016_libcrypto.patch.sig	x_refsource_CONFIRM
	http://www.securitytracker.com/id/1037575	vdb-entry, x_refsource_SECTRACK
	https://access.redhat.com/errata/RHSA-2017:1414	vendor-advisory, x_refsource_REDHAT
	https://seclists.org/oss-sec/2017/q1/52	mailing-list, x_refsource_MLIST
	https://www.debian.org/security/2017/dsa-3773	vendor-advisory, x_refsource_DEBIAN
	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7056	x_refsource_CONFIRM
	https://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-7056.html	x_refsource_CONFIRM
	http://www.securityfocus.com/bid/95375	vdb-entry, x_refsource_BID
	http://rhn.redhat.com/errata/RHSA-2017-1415.html	vendor-advisory, x_refsource_REDHAT
	https://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/033_libcrypto.patch.sig	x_refsource_CONFIRM
	https://security-tracker.debian.org/tracker/CVE-2016-7056	x_refsource_CONFIRM
	https://access.redhat.com/errata/RHSA-2017:1802	vendor-advisory, x_refsource_REDHAT

Impacted products

	Vendor	Product	Version
	The OpenSSL Project	openssl	Version: openssl 1.0.1u

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T01:50:46.703Z",
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            "url": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/016_libcrypto.patch.sig"
          },
          {
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              "x_refsource_SECTRACK",
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          },
          {
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            "tags": [
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              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2017:1414"
          },
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            "url": "https://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-7056.html"
          },
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              "x_refsource_BID",
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          },
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            "attackComplexity": "LOW",
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            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
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            "privilegesRequired": "LOW",
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          "tags": [
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        },
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          "tags": [
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          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/016_libcrypto.patch.sig"
        },
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        },
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          "url": "https://access.redhat.com/errata/RHSA-2017:1414"
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          "tags": [
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          ],
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        },
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          "tags": [
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          ],
          "url": "http://rhn.redhat.com/errata/RHSA-2017-1415.html"
        },
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          "url": "https://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/033_libcrypto.patch.sig"
        },
        {
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          ],
          "url": "https://security-tracker.debian.org/tracker/CVE-2016-7056"
        },
        {
          "name": "RHSA-2017:1802",
          "tags": [
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            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2017:1802"
        }
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  },
  "cveMetadata": {
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    "assignerShortName": "redhat",
    "cveId": "CVE-2016-7056",
    "datePublished": "2018-09-10T16:00:00",
    "dateReserved": "2016-08-23T00:00:00",
    "dateUpdated": "2024-08-06T01:50:46.703Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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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