BN_mod_exp may produce incorrect results on x86_64

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2017-3732
StatePUBLISHED
Assigneropenssl
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-05-04 19:29:00 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionThere 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.

Risk And Classification

Primary CVSS: v3.1 5.9 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem Types: CWE-200 | carry-propagating bug

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
2.0[email protected]Primary4.3AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None

AV:N/AC:M/Au:N/C:P/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Nodejs Node.js All All All All
Application Nodejs Node.js All All All All
Application Nodejs Node.js All All All All
Application Nodejs Node.js All All All All
Application Openssl Openssl 1.0.2 All All All
Application Openssl Openssl 1.0.2 beta1 All All
Application Openssl Openssl 1.0.2 beta2 All All
Application Openssl Openssl 1.0.2 beta3 All All
Application Openssl Openssl 1.0.2a All All All
Application Openssl Openssl 1.0.2b All All All
Application Openssl Openssl 1.0.2c All All All
Application Openssl Openssl 1.0.2d All All All
Application Openssl Openssl 1.0.2e All All All
Application Openssl Openssl 1.0.2f All All All
Application Openssl Openssl 1.0.2h All All All
Application Openssl Openssl 1.0.2i All All All
Application Openssl Openssl 1.1.0a All All All
Application Openssl Openssl 1.1.0b All All All
Application Openssl Openssl 1.1.0c All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OpenSSL OpenSSL affected openssl-1.1.0 Not specified
CNA OpenSSL OpenSSL affected openssl-1.1.0a Not specified
CNA OpenSSL OpenSSL affected openssl-1.1.0b Not specified
CNA OpenSSL OpenSSL affected openssl-1.1.0c Not specified
CNA OpenSSL OpenSSL affected openssl-1.0.2 Not specified
CNA OpenSSL OpenSSL affected openssl-1.0.2a Not specified
CNA OpenSSL OpenSSL affected openssl-1.0.2b Not specified
CNA OpenSSL OpenSSL affected openssl-1.0.2c Not specified
CNA OpenSSL OpenSSL affected openssl-1.0.2d Not specified
CNA OpenSSL OpenSSL affected openssl-1.0.2e Not specified
CNA OpenSSL OpenSSL affected openssl-1.0.2f Not specified
CNA OpenSSL OpenSSL affected openssl-1.0.2g Not specified
CNA OpenSSL OpenSSL affected openssl-1.0.2h Not specified
CNA OpenSSL OpenSSL affected openssl-1.0.2i Not specified
CNA OpenSSL OpenSSL affected openssl-1.0.2j Not specified

References

ReferenceSourceLinkTags
Document Display | HPE Support Center af854a3a-2127-422b-91ae-364da2661108 support.hpe.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
security.FreeBSD.org/advisories/FreeBSD-SA-17:02.openssl.asc af854a3a-2127-422b-91ae-364da2661108 security.FreeBSD.org Third Party Advisory
[R5] SecurityCenter 5.4.3 Fixes Multiple Vulnerabilities - Security Advisory | Tenable Network Security af854a3a-2127-422b-91ae-364da2661108 www.tenable.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
OpenSSL Multiple Bugs Let Remote Users Deny Service and Obtain Potentially Sensitive Information - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
Oracle Critical Patch Update - October 2017 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
bn/asm/x86_64-mont5.pl: fix carry bug in bn_sqr8x_internal. · openssl/openssl@a59b90b · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch
Oracle Critical Patch Update - January 2018 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
OpenSSL CVE-2017-3732 Information Disclosure Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Oracle Critical Patch Update Advisory - April 2019 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Oracle Critical Patch Update - July 2017 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
www.openssl.org/news/secadv/20170126.txt af854a3a-2127-422b-91ae-364da2661108 www.openssl.org Vendor Advisory
OpenSSL: Multiple vulnerabilities (GLSA 201702-07) — Gentoo Security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: OSS-Fuzz project (en)

Legacy QID Mappings

  • 43835 HPE Switches And Routers Open Secure Sockets Layer (OpenSSL) Multiple Remote Vulnerabilities (HPESBHF03838)
  • 710243 Gentoo Linux MySQL Multiple Vulnerabilities (GLSA 201802-04)
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