There is a carry propagating bug in the x86_64 Montgomery squaring procedure in OpenSSL before 1.0.2m and 1.1.0 before 1.1.0g. No EC algorithms are affected. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH are considered just feasible (although very difficult) because most of the work necessary to deduce information about a private key may be performed offline. The amount of resources required for such an attack would be very significant and likely only accessible to a limited number of attackers. An attacker would additionally need online access to an unpatched system using the target private key in a scenario with persistent DH parameters and a private key that is shared between multiple clients. This only affects processors that support the BMI1, BMI2 and ADX extensions like Intel Broadwell (5th generation) and later or AMD Ryzen.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-3736 from the MITRE CVE dictionary dictionary and NIST NVD.
CVSS3 Base Score | 5.9 |
---|---|
CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
Attack Vector | Network |
Attack Complexity | High |
Privileges Required | None |
User Interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity Impact | None |
Availability Impact | None |
Platform | Errata | Release Date |
---|---|---|
Red Hat JBoss Core Services 1 | RHSA-2018:2187 | 2018-07-12 |
Red Hat JBoss Core Services on RHEL 6 Server | RHSA-2018:2186 | 2018-07-12 |
Red Hat Enterprise Linux Supplementary (v. 6) (java-1.8.0-ibm) | RHSA-2018:2575 | 2018-08-28 |
Red Hat Enterprise Linux 7 (openssl) | RHSA-2018:0998 | 2018-04-10 |
Red Hat Enterprise Linux Supplementary (v. 7) (java-1.8.0-ibm) | RHSA-2018:2568 | 2018-08-27 |
Red Hat JBoss Core Services on RHEL 7 Server | RHSA-2018:2185 | 2018-07-12 |
Red Hat Satellite 5.8 (RHEL v.6) (java-1.8.0-ibm) | RHSA-2018:2713 | 2018-09-17 |
Platform | Package | State |
---|---|---|
Red Hat JBoss Web Server 3 | openssl | Not affected |
Red Hat JBoss EWS 2 | openssl | Will not fix |
Red Hat JBoss EAP 6 | openssl | Will not fix |
Red Hat JBoss EAP 5 | openssl | Not affected |
Red Hat Enterprise Linux 7 | openssl098e | Not affected |
Red Hat Enterprise Linux 7 | OVMF | Will not fix |
Red Hat Enterprise Linux 6 | openssl | Not affected |
Red Hat Enterprise Linux 6 | openssl098e | Not affected |
Red Hat Enterprise Linux 5 | openssl | Not affected |
Red Hat Enterprise Linux 5 | openssl097a | Not affected |
RHEV Manager 3 | mingw-virt-viewer | Will not fix |