CVE-2017-3738 Details

CVE-2017-3738

Published: 2017-12-07
Last Modified: 2019-04-23
CVE Author: NIST National Vulnerability Database
CVE Assigner: cve@mitre.org
Summary

There is an overflow bug in the AVX2 Montgomery multiplication procedure used in exponentiation with 1024-bit moduli. 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 DH1024 are considered just feasible, 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 significant. However, for an attack on TLS to be meaningful, the server would have to share the DH1024 private key among multiple clients, which is no longer an option since CVE-2016-0701. This only affects processors that support the AVX2 but not ADX extensions like Intel Haswell (4th generation). Note: The impact from this issue is similar to CVE-2017-3736, CVE-2017-3732 and CVE-2015-3193. OpenSSL version 1.0.2-1.0.2m and 1.1.0-1.1.0g are affected. Fixed in OpenSSL 1.0.2n. Due to the low severity of this issue we are not issuing a new release of OpenSSL 1.1.0 at this time. The fix will be included in OpenSSL 1.1.0h when it becomes available. The fix is also available in commit e502cc86d in the OpenSSL git repository.

Analysis
Common Vulnerability Score System v2.0
Severity Medium
Base Score 4.3/10
Exploit Score 8.6/10
Access Vector Network
Access Complexity Medium
Authentication None
Impact Score 2.9/10
Confidentiality Impact Partial
Availability Impact None
Integrity Impact None
Vector String AV:N/AC:M/Au:N/C:P/I:N/A:N
Common Vulnerability Score System v3.1
Severity Medium
Base Score 5.9/10
Exploit Score 2.2/10
Access Vector Network
Access Complexity High
Privileges Required None
Impact Score 3.6/10
Confidentiality Impact High
Availability Impact None
Integrity Impact None
Scope Unchanged
User Interaction None
Vector String CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Products Reported
CPE Vulnerable Start Excluding
cpe:2.3:a:openssl:openssl:1.0.2:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.0.2:beta1:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.0.2:beta2:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.0.2:beta3:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.0.2a:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.0.2b:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.0.2c:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.0.2d:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.0.2e:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.0.2f:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.0.2g:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.0.2h:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.0.2i:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.0.2j:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.0.2k:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.0.2l:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.0.2m:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.1.0:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.1.0a:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.1.0b:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.1.0c:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.1.0d:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.1.0e:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.1.0f:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:openssl:openssl:1.1.0g:*:*:*:*:*:*:* Yes - -
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Yes - -
References

http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
http://www.securityfocus.com/bid/102118
http://www.securitytracker.com/id/1039978
https://access.redhat.com/errata/RHSA-2018:0998
https://access.redhat.com/errata/RHSA-2018:2185
https://access.redhat.com/errata/RHSA-2018:2186
https://access.redhat.com/errata/RHSA-2018:2187
https://github.com/openssl/openssl/commit/e502cc86df9dafded1694fceb3228ee34d11c11a
https://nodejs.org/en/blog/vulnerability/december-2017-security-releases/
https://security.FreeBSD.org/advisories/FreeBSD-SA-17:12.openssl.asc
https://security.gentoo.org/glsa/201712-03
https://security.netapp.com/advisory/ntap-20171208-0001/
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst0388
https://www.debian.org/security/2017/dsa-4065
https://www.debian.org/security/2018/dsa-4157
https://www.openssl.org/news/secadv/20171207.txt
https://www.openssl.org/news/secadv/20180327.txt
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
https://www.tenable.com/security/tns-2017-16
https://www.tenable.com/security/tns-2018-04
https://www.tenable.com/security/tns-2018-06
https://www.tenable.com/security/tns-2018-07

CVE ID
CVE-2017-3738
Published
2017-12-07
Modified
2019-04-23
CVSSv2.0
Medium
CVSSv3.1
Medium
PCI Compliance
Fail
US-CERT Alert
No
CWE
CWE-200

Free Vulnerability Scanning, Assessment and Management

Mageni's Platform is packed with all the features you need to scan, assess and manage vulnerabilities like this - it is free, open source, lightning fast, reliable and scalable.

Router
Servers
Laptop
Database
Group
Cloud

Frequently Asked Questions

No, you can scan concurrently as many assets as you want. Please note that you must be aware of the hardware requeriments of the platform to ensure a good performance.

No, you can add as many assest as you want. It doesn't matters if you have millions of assets, we won't charge you for that.

No. The software is completely free. We have no intention to charge you to use the software, in fact - it completely goes against our beliefs and business model.

A vulnerability is defined in the ISO 27002 standard as “A weakness of an asset or group of assets that can be exploited by one or more threats” (International Organization for Standardization, 2005)

We generate revenue by providing support and other services for customers that require a subscription so they get guaranteed support and enterprise services. To use Mageni's Platform is completely free, with no limits at all.

Yes. Mageni understands that there are professionals and businesses that need commercial support so Mageni provides an active support subscription with everything needed to run Mageni's Platform reliably and securely. More than software, it's access to security experts, knowledge resources, security updates, and support tools you can't get anywhere else. The subscription includes:

  • Ongoing delivery
    • Patches
    • Bug fixes
    • Updates
    • Upgrades
  • Technical support
    • 24/7 availability
    • Unlimited Incidents
    • Specialty-based routing
    • Multi-Channel
  • Commitments
    • Software certifications
    • Software assurance
    • SLA

No, we don't store the information of your vulnerabilities in our servers.

Vulnerability management is the process in which vulnerabilities in IT are identified and the risks of these vulnerabilities are evaluated. This evaluation leads to correcting the vulnerabilities and removing the risk or a formal risk acceptance by the management of an organization. The term vulnerability management is often confused with vulnerability scanning. Despite the fact both are related, there is an important difference between the two. Vulnerability scanning consists of using a computer program to identify vulnerabilities in networks, computer infrastructure or applications. Vulnerability management is the process surrounding vulnerability scanning, also taking into account other aspects such as risk acceptance, remediation etc. Source: "Implementing a Vulnerability Management Process". SANS Institute.

I am ready to start scanning for vulnerabilities