CVE-2017-3730— Bad (EC)DHE parameters cause a client crash

EPSS 53.05% · P98 Updated Feb 21, 2026

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I. Basic Information for CVE-2017-3730

Vulnerability Information

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Vulnerability Title

Bad (EC)DHE parameters cause a client crash

Source: NVD (National Vulnerability Database)

Vulnerability Description

In OpenSSL 1.1.0 before 1.1.0d, if a malicious server supplies bad parameters for a DHE or ECDHE key exchange then this can result in the client attempting to dereference a NULL pointer leading to a client crash. This could be exploited in a Denial of Service attack.

Source: NVD (National Vulnerability Database)

CVSS Information

N/A

Source: NVD (National Vulnerability Database)

Vulnerability Type

N/A

Source: NVD (National Vulnerability Database)

Vulnerability Title

OpenSSL 代码问题漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability 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 1.1.0d之前的1.1.0版本中存在代码问题漏洞。攻击者可利用该漏洞造成客户端崩溃（空指针逆向引用）。

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
OpenSSL	OpenSSL	openssl-1.1.0	-

II. Public POCs for CVE-2017-3730

#	POC Description	Source Link	Shenlong Link
1	OpenSSL CVE-2017-3730 proof-of-concept	https://github.com/guidovranken/CVE-2017-3730	POC Details
2	OpenSSL CVE-2017-3730 proof-of-concept	https://github.com/olivierh59500/CVE-2017-3730	POC Details

AI-Generated POCPremium

No public POC found.

III. Intelligence Information for CVE-2017-3730

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🔗 https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03838en_usx_refsource_CONFIRM
🔗 http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlx_refsource_CONFIRM
https://github.com/openssl/openssl/commit/efbe126e3ebb9123ac9d058aa2bb044261342aaax_refsource_MISC
🔗 https://www.openssl.org/news/secadv/20170126.txtx_refsource_CONFIRM
🔗 http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.htmlx_refsource_CONFIRM
🔗 https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.htmlx_refsource_MISC
🔗 https://www.exploit-db.com/exploits/41192/exploitx_refsource_EXPLOIT-DB
🔗 http://www.securityfocus.com/bid/95812vdb-entryx_refsource_BID
🔗 http://www.securitytracker.com/id/1037717vdb-entryx_refsource_SECTRACK
https://security.gentoo.org/glsa/201702-07vendor-advisoryx_refsource_GENTOO
https://nvd.nist.gov/vuln/detail/CVE-2017-3730

Same Patch Batch · OpenSSL · 2017-05-04 · 6 CVEs total

CVE-2016-7053		CMS Null dereference
CVE-2016-7054		ChaCha20/Poly1305 heap-buffer-overflow
CVE-2017-3731		Truncated packet could crash via OOB read
CVE-2017-3732		BN_mod_exp may produce incorrect results on x86_64
CVE-2017-3733		Encrypt-Then-Mac renegotiation crash

IV. Related Vulnerabilities

Same product: OpenSSL

Same vendor: OpenSSL

V. Comments for CVE-2017-3730

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CVE-2017-3730— Bad (EC)DHE parameters cause a client crash

I. Basic Information for CVE-2017-3730

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2017-3730

III. Intelligence Information for CVE-2017-3730

Same Patch Batch · OpenSSL · 2017-05-04 · 6 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2017-3730

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