CVE-2017-3732

Upstream information

CVE-2017-3732 at MITRE

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.

SUSE information

CVSS v2 Scores
	National Vulnerability Database	SUSE
Base Score	4.30	2.57
Vector	AV:N/AC:M/Au:N/C:P/I:N/A:N	AV:N/AC:H/Au:N/C:P/I:N/A:N
Access Vector	Network	Network
Access Complexity	Medium	High
Authentication	None	None
Confidentiality Impact	Partial	Partial
Integrity Impact	None	None
Availability Impact	None	None

CVSS v3 Scores
	National Vulnerability Database
Base Score	5.9
Vector	AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Access Vector	Network
Access Complexity	High
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality Impact	High
Integrity Impact	None
Availability Impact	None

Note from the SUSE Security Team

This problem affects only openssl 1.0.2 and newer, older versions did not have the code and are not affected.

SUSE Bugzilla entries: 1021641 [RESOLVED / FIXED], 1022086 [RESOLVED / FIXED], 1025354 [RESOLVED / WORKSFORME]

SUSE Security Advisories:

SUSE-SU-2017:0431-1, published Thu Feb 9 07:10:25 MST 2017
SUSE-SU-2017:0441-1, published Fri Feb 10 13:07:36 MST 2017
SUSE-SU-2017:0855-1, published Wed Mar 29 10:13:34 MDT 2017
openSUSE-SU-2017:0481-1, published Fri, 17 Feb 2017 04:12:38 +0100 (CET)
openSUSE-SU-2017:0527-1, published Tue, 21 Feb 2017 00:07:16 +0100 (CET)
openSUSE-SU-2017:0941-1, published Wed, 5 Apr 2017 18:20:15 +0200 (CEST)

List of released packages

Product(s)	Fixed package version(s)	References
SUSE Enterprise Storage 4	`nodejs4 >= 4.7.3-14.1`	Patchnames: SUSE-Storage-4-2017-476
SUSE Linux Enterprise Desktop 12 SP2	`libopenssl-devel >= 1.0.2j-59.1` `libopenssl1_0_0 >= 1.0.2j-59.1` `libopenssl1_0_0-32bit >= 1.0.2j-59.1` `openssl >= 1.0.2j-59.1`	Patchnames: SUSE-SLE-DESKTOP-12-SP2-2017-228
SUSE Linux Enterprise Module for Web Scripting 12	`nodejs4 >= 4.7.3-14.1` `nodejs4-devel >= 4.7.3-14.1` `nodejs4-docs >= 4.7.3-14.1` `nodejs6 >= 6.9.5-7.1` `nodejs6-devel >= 6.9.5-7.1` `nodejs6-docs >= 6.9.5-7.1` `npm4 >= 4.7.3-14.1` `npm6 >= 6.9.5-7.1`	Patchnames: SUSE-SLE-Module-Web-Scripting-12-2017-221 SUSE-SLE-Module-Web-Scripting-12-2017-476
SUSE Linux Enterprise Server 12 SP2	`libopenssl-devel >= 1.0.2j-59.1` `libopenssl1_0_0 >= 1.0.2j-59.1` `libopenssl1_0_0-32bit >= 1.0.2j-59.1` `libopenssl1_0_0-hmac >= 1.0.2j-59.1` `libopenssl1_0_0-hmac-32bit >= 1.0.2j-59.1` `openssl >= 1.0.2j-59.1` `openssl-doc >= 1.0.2j-59.1`	Patchnames: SUSE-SLE-SERVER-12-SP2-2017-228
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2	`libopenssl-devel >= 1.0.2j-59.1` `libopenssl1_0_0 >= 1.0.2j-59.1` `libopenssl1_0_0-hmac >= 1.0.2j-59.1` `openssl >= 1.0.2j-59.1` `openssl-doc >= 1.0.2j-59.1`	Patchnames: SUSE-SLE-RPI-12-SP2-2017-228
SUSE Linux Enterprise Software Development Kit 12 SP2	`libopenssl-devel >= 1.0.2j-59.1` `openssl >= 1.0.2j-59.1`	Patchnames: SUSE-SLE-SDK-12-SP2-2017-228
openSUSE Leap 42.1	`nodejs >= 4.7.3-39.1` `nodejs-debuginfo >= 4.7.3-39.1` `nodejs-debugsource >= 4.7.3-39.1` `nodejs-devel >= 4.7.3-39.1` `nodejs-docs >= 4.7.3-39.1` `npm >= 4.7.3-39.1`	Patchnames: openSUSE-2017-284
openSUSE Leap 42.2	`libopenssl-devel >= 1.0.2j-4.1` `libopenssl-devel-32bit >= 1.0.2j-4.1` `libopenssl1_0_0 >= 1.0.2j-4.1` `libopenssl1_0_0-32bit >= 1.0.2j-4.1` `libopenssl1_0_0-debuginfo >= 1.0.2j-4.1` `libopenssl1_0_0-debuginfo-32bit >= 1.0.2j-4.1` `libopenssl1_0_0-hmac >= 1.0.2j-4.1` `libopenssl1_0_0-hmac-32bit >= 1.0.2j-4.1` `nodejs4 >= 4.7.3-5.3.1` `nodejs4-debuginfo >= 4.7.3-5.3.1` `nodejs4-debugsource >= 4.7.3-5.3.1` `nodejs4-devel >= 4.7.3-5.3.1` `nodejs4-docs >= 4.7.3-5.3.1` `npm4 >= 4.7.3-5.3.1` `openssl >= 1.0.2j-4.1` `openssl-debuginfo >= 1.0.2j-4.1` `openssl-debugsource >= 1.0.2j-4.1` `openssl-doc >= 1.0.2j-4.1`	Patchnames: openSUSE-2017-256 openSUSE-2017-442