What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 55.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2017-05-04 · updated 2026-06-17
• Weakness: CWE-476

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.

Affected products

• OpenSSL: 1.1.0, 1.1.0a, 1.1.0b, 1.1.0c
• Oracle Corporation Oracle Agile Engineering Data Management: 6.1.3, 6.2.0
• Oracle Communications Application Session Controller: 3.7.1, 3.8.0
• Oracle Communications Eagle Lnp Application Processor: 10.0, 10.1, 10.2
• Oracle Corporation Communications Operations Monitor: 3.4, 4.0
• Oracle Corporation JD Edwards EnterpriseOne Tools: 9.2
• Oracle Jd Edwards World Security: a9.1, a9.2, a9.3, a9.4

References

• http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
• http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
• http://www.securityfocus.com/bid/95812
• http://www.securitytracker.com/id/1037717
• https://github.com/openssl/openssl/commit/efbe126e3ebb9123ac9d058aa2bb044261342aaa
• https://security.gentoo.org/glsa/201702-07
• https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03838en_us
• https://www.exploit-db.com/exploits/41192/
• https://www.openssl.org/news/secadv/20170126.txt
• https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
• http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
• http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html

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