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CVE-2017-3738 Detail

Description

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.


Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  5.9 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html Patch  Third Party Advisory 
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html Patch  Third Party Advisory 
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html Patch  Third Party Advisory 
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html Patch  Third Party Advisory 
http://www.securityfocus.com/bid/102118 Third Party Advisory  VDB Entry 
http://www.securitytracker.com/id/1039978 Third Party Advisory  VDB Entry 
https://access.redhat.com/errata/RHSA-2018:0998 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:2185 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:2186 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:2187 Third Party Advisory 
https://github.com/openssl/openssl/commit/e502cc86df9dafded1694fceb3228ee34d11c11a Patch  Third Party Advisory 
https://nodejs.org/en/blog/vulnerability/december-2017-security-releases/ Vendor Advisory 
https://security.FreeBSD.org/advisories/FreeBSD-SA-17:12.openssl.asc Third Party Advisory 
https://security.gentoo.org/glsa/201712-03 Third Party Advisory 
https://security.netapp.com/advisory/ntap-20171208-0001/ Third Party Advisory 
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03881en_us Third Party Advisory 
https://www.debian.org/security/2017/dsa-4065 Third Party Advisory 
https://www.debian.org/security/2018/dsa-4157 Third Party Advisory 
https://www.openssl.org/news/secadv/20171207.txt Vendor Advisory 
https://www.openssl.org/news/secadv/20180327.txt Vendor Advisory 
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html Patch  Third Party Advisory 
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html Patch  Third Party Advisory 
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html Patch  Third Party Advisory 
https://www.tenable.com/security/tns-2017-16 Third Party Advisory 
https://www.tenable.com/security/tns-2018-04 Third Party Advisory 
https://www.tenable.com/security/tns-2018-06 Third Party Advisory 
https://www.tenable.com/security/tns-2018-07 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor cwe source acceptance level NIST  

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Change History

24 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-3738
NVD Published Date:
12/07/2017
NVD Last Modified:
08/19/2022
Source:
OpenSSL Software Foundation