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cnvd-2021-39525
Vulnerability from cnvd
Title: OpenSSL信任管理问题漏洞
Description:
OpenSSL是Openssl团队的一个开源的能够实现安全套接层（SSLv2/v3）和安全传输层（TLSv1）协议的通用加密库。该产品支持多种加密算法，包括对称密码、哈希算法、安全散列算法等。
OpenSSL 1.1.1h到1.1.1j版本中存在信任管理问题漏洞，攻击者可利用该漏洞绕过ca证书检查。
Severity: 中
Patch Name: OpenSSL信任管理问题漏洞的补丁
Patch Description:
OpenSSL是Openssl团队的一个开源的能够实现安全套接层（SSLv2/v3）和安全传输层（TLSv1）协议的通用加密库。该产品支持多种加密算法，包括对称密码、哈希算法、安全散列算法等。
OpenSSL 1.1.1h到1.1.1j版本中存在信任管理问题漏洞，攻击者可利用该漏洞绕过ca证书检查。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:
厂商已发布了漏洞修复程序，请及时关注更新： https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-2021-GHY28dJd
Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-3450
Impacted products
| Name | OpenSSL OpenSSL >=1.1.h，<=1.1.j |
|---|
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"formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-2021-GHY28dJd",
"isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
"number": "CNVD-2021-39525",
"openTime": "2021-06-04",
"patchDescription": "OpenSSL\u662fOpenssl\u56e2\u961f\u7684\u4e00\u4e2a\u5f00\u6e90\u7684\u80fd\u591f\u5b9e\u73b0\u5b89\u5168\u5957\u63a5\u5c42\uff08SSLv2/v3\uff09\u548c\u5b89\u5168\u4f20\u8f93\u5c42\uff08TLSv1\uff09\u534f\u8bae\u7684\u901a\u7528\u52a0\u5bc6\u5e93\u3002\u8be5\u4ea7\u54c1\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 1.1.1h\u52301.1.1j\u7248\u672c\u4e2d\u5b58\u5728\u4fe1\u4efb\u7ba1\u7406\u95ee\u9898\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7ca\u8bc1\u4e66\u68c0\u67e5\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\u4fe1\u4efb\u7ba1\u7406\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
"products": {
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"referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-3450",
"serverity": "\u4e2d",
"submitTime": "2021-03-26",
"title": "OpenSSL\u4fe1\u4efb\u7ba1\u7406\u95ee\u9898\u6f0f\u6d1e"
}
CVE-2021-3450 (GCVE-0-2021-3450)
Vulnerability from cvelistv5
Published
2021-03-25 14:25
Modified
2024-09-17 03:07
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Invalid Certificate Verification
Summary
The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an additional strict check. An error in the implementation of this check meant that the result of a previous check to confirm that certificates in the chain are valid CA certificates was overwritten. This effectively bypasses the check that non-CA certificates must not be able to issue other certificates. If a "purpose" has been configured then there is a subsequent opportunity for checks that the certificate is a valid CA. All of the named "purpose" values implemented in libcrypto perform this check. Therefore, where a purpose is set the certificate chain will still be rejected even when the strict flag has been used. A purpose is set by default in libssl client and server certificate verification routines, but it can be overridden or removed by an application. In order to be affected, an application must explicitly set the X509_V_FLAG_X509_STRICT verification flag and either not set a purpose for the certificate verification or, in the case of TLS client or server applications, override the default purpose. OpenSSL versions 1.1.1h and newer are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1h-1.1.1j).
References
Impacted products
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"name": "https://www.openssl.org/news/secadv/20210325.txt",
"refsource": "CONFIRM",
"url": "https://www.openssl.org/news/secadv/20210325.txt"
},
{
"name": "https://www.openssl.org/news/secadv/20210325.txt",
"refsource": "CONFIRM",
"url": "https://www.openssl.org/news/secadv/20210325.txt"
},
{
"name": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2a40b7bc7b94dd7de897a74571e7024f0cf0d63b",
"refsource": "CONFIRM",
"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2a40b7bc7b94dd7de897a74571e7024f0cf0d63b"
},
{
"name": "20210325 Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: March 2021",
"refsource": "CISCO",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-2021-GHY28dJd"
},
{
"name": "[oss-security] 20210327 OpenSSL 1.1.1 CVE-2021-3450 CA certificate check bypass with X509_V_FLAG_X509_STRICT, CVE-2021-3449 NULL pointer deref in signature_algorithms processing",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2021/03/27/1"
},
{
"name": "[oss-security] 20210327 Re: OpenSSL 1.1.1 CVE-2021-3450 CA certificate check bypass with X509_V_FLAG_X509_STRICT, CVE-2021-3449 NULL pointer deref in signature_algorithms processing",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2021/03/27/2"
},
{
"name": "[oss-security] 20210328 Re: OpenSSL 1.1.1 CVE-2021-3450 CA certificate check bypass with X509_V_FLAG_X509_STRICT, CVE-2021-3449 NULL pointer deref in signature_algorithms processing",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2021/03/28/3"
},
{
"name": "[oss-security] 20210328 Re: OpenSSL 1.1.1 CVE-2021-3450 CA certificate check bypass with X509_V_FLAG_X509_STRICT, CVE-2021-3449 NULL pointer deref in signature_algorithms processing",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2021/03/28/4"
},
{
"name": "GLSA-202103-03",
"refsource": "GENTOO",
"url": "https://security.gentoo.org/glsa/202103-03"
},
{
"name": "FEDORA-2021-cbf14ab8f9",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CCBFLLVQVILIVGZMBJL3IXZGKWQISYNP/"
},
{
"name": "https://www.oracle.com/security-alerts/cpuApr2021.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpuApr2021.html"
},
{
"name": "https://www.tenable.com/security/tns-2021-09",
"refsource": "CONFIRM",
"url": "https://www.tenable.com/security/tns-2021-09"
},
{
"name": "https://security.netapp.com/advisory/ntap-20210326-0006/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20210326-0006/"
},
{
"name": "https://security.FreeBSD.org/advisories/FreeBSD-SA-21:07.openssl.asc",
"refsource": "MISC",
"url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-21:07.openssl.asc"
},
{
"name": "https://www.tenable.com/security/tns-2021-05",
"refsource": "CONFIRM",
"url": "https://www.tenable.com/security/tns-2021-05"
},
{
"name": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10356",
"refsource": "CONFIRM",
"url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10356"
},
{
"name": "https://www.tenable.com/security/tns-2021-08",
"refsource": "CONFIRM",
"url": "https://www.tenable.com/security/tns-2021-08"
},
{
"name": "https://mta.openssl.org/pipermail/openssl-announce/2021-March/000198.html",
"refsource": "MISC",
"url": "https://mta.openssl.org/pipermail/openssl-announce/2021-March/000198.html"
},
{
"name": "https://www.oracle.com//security-alerts/cpujul2021.html",
"refsource": "MISC",
"url": "https://www.oracle.com//security-alerts/cpujul2021.html"
},
{
"name": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44845",
"refsource": "CONFIRM",
"url": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44845"
},
{
"name": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0013",
"refsource": "CONFIRM",
"url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0013"
},
{
"name": "https://www.oracle.com/security-alerts/cpuoct2021.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
},
{
"name": "https://www.oracle.com/security-alerts/cpuapr2022.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"name": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf",
"refsource": "CONFIRM",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
},
{
"name": "https://www.oracle.com/security-alerts/cpujul2022.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpujul2022.html"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
"assignerShortName": "openssl",
"cveId": "CVE-2021-3450",
"datePublished": "2021-03-25T14:25:14.287899Z",
"dateReserved": "2021-03-19T00:00:00",
"dateUpdated": "2024-09-17T03:07:10.879Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
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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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