Vulnerability Description
There is a carry propagating bug in the x86_64 Montgomery squaring procedure in OpenSSL 1.0.2 before 1.0.2k and 1.1.0 before 1.1.0d. 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. For example this can occur by default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very similar to CVE-2015-3193 but must be treated as a separate problem.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openssl | Openssl | 1.0.2 |
| Nodejs | Node.Js | >= 4.0.0, <= 4.1.2 |
Related Weaknesses (CWE)
References
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.htmlPatchThird Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.htmlPatchThird Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlPatchThird Party Advisory
- http://www.securityfocus.com/bid/95814Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1037717Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:2185Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2186Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2187Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2568Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2575Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2713Third Party Advisory
- https://github.com/openssl/openssl/commit/a59b90bf491410f1f2bc4540cc21f1980fd14cPatch
- https://security.FreeBSD.org/advisories/FreeBSD-SA-17:02.openssl.ascThird Party Advisory
- https://security.gentoo.org/glsa/201702-07Third Party Advisory
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpeThird Party Advisory
FAQ
What is CVE-2017-3732?
CVE-2017-3732 is a vulnerability with a CVSS score of 5.9 (MEDIUM). There is a carry propagating bug in the x86_64 Montgomery squaring procedure in OpenSSL 1.0.2 before 1.0.2k and 1.1.0 before 1.1.0d. No EC algorithms are affected. Analysis suggests that attacks again...
How severe is CVE-2017-3732?
CVE-2017-3732 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-3732?
Check the references section above for vendor advisories and patch information. Affected products include: Openssl Openssl, Nodejs Node.Js.