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.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-3730 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
CVSS3 Base Score | 5.9 |
---|---|
CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
Attack Vector | Network |
Attack Complexity | High |
Privileges Required | None |
User Interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity Impact | None |
Availability Impact | High |
Platform | Package | State |
---|---|---|
Red Hat JBoss Web Server 3 | openssl | Not affected |
Red Hat JBoss EWS 2 | openssl | Not affected |
Red Hat JBoss EWS 1 | openssl | Not affected |
Red Hat JBoss EAP 6 | openssl | Not affected |
Red Hat JBoss EAP 5 | openssl | Not affected |
Red Hat JBoss Core Services 1 | openssl | Not affected |
Red Hat Enterprise Linux 7 | openssl098e | Not affected |
Red Hat Enterprise Linux 7 | openssl | Not affected |
Red Hat Enterprise Linux 7 | OVMF | Not affected |
Red Hat Enterprise Linux 6 | openssl | Not affected |
Red Hat Enterprise Linux 6 | openssl098e | Not affected |
Red Hat Enterprise Linux 5 | openssl097a | Not affected |
Red Hat Enterprise Linux 5 | openssl | Not affected |
RHEV Manager 3 | mingw-virt-viewer | Not affected |