CVE-2017-3738

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Summary

CVECVE-2017-3738
StatePUBLISHED
Assigneropenssl
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-12-07 16:29:00 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionThere 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.

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
Operating System Debian Debian Linux 8.0 All All All
Operating System Debian Debian Linux 9.0 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 1.0.2g All All All
Application Openssl Openssl 1.0.2h All All All
Application Openssl Openssl 1.0.2i All All All
Application Openssl Openssl 1.0.2j All All All
Application Openssl Openssl 1.0.2k All All All
Application Openssl Openssl 1.0.2l All All All
Application Openssl Openssl 1.0.2m All All All
Application Openssl Openssl 1.1.0 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
Application Openssl Openssl 1.1.0d All All All
Application Openssl Openssl 1.1.0e All All All
Application Openssl Openssl 1.1.0f All All All
Application Openssl Openssl 1.1.0g All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OpenSSL Software Foundation OpenSSL affected 1.0.2-1.02m Not specified
CNA OpenSSL Software Foundation OpenSSL affected 1.1.0-1.1.0g Not specified

References

ReferenceSourceLinkTags
Document Display | HPE Support Center af854a3a-2127-422b-91ae-364da2661108 support.hpe.com Third Party Advisory
CPU Oct 2018 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
Debian -- Security Information -- DSA-4157-1 openssl af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
www.openssl.org/news/secadv/20171207.txt af854a3a-2127-422b-91ae-364da2661108 www.openssl.org Vendor Advisory
bn/asm/rsaz-avx2.pl: fix digit correction bug in rsaz_1024_mul_avx2. · openssl/openssl@e502cc8 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Third Party Advisory
[R1] OpenSSL Stand-alone Patch Available for SecurityCenter versions 5.0 or Later - Security Advisory | Tenable® 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
Oracle Critical Patch Update - July 2019 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
Oracle Critical Patch Update - January 2019 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
security.FreeBSD.org/advisories/FreeBSD-SA-17:12.openssl.asc af854a3a-2127-422b-91ae-364da2661108 security.FreeBSD.org Third Party Advisory
Debian -- Security Information -- DSA-4065-1 openssl1.0 af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
www.openssl.org/news/secadv/20180327.txt af854a3a-2127-422b-91ae-364da2661108 www.openssl.org Vendor Advisory
OpenSSL CVE-2017-3738 Information Disclosure Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Oracle Critical Patch Update - January 2018 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
[R1] Industrial Security 1.1.0 Fixes One Third-party Vulnerability - Security Advisory | Tenable® 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
OpenSSL: Multiple vulnerabilities (GLSA 201712-03) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
December 2017 OpenSSL Vulnerabilities in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Data Confidentiality/Integrity Vulnerability, December 2017 | Node.js af854a3a-2127-422b-91ae-364da2661108 nodejs.org Vendor Advisory
Oracle Critical Patch Update - April 2018 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
OpenSSL Overflow in rsaz_1024_mul_avx2() Lets Remote Users Obtain Potentially Sensitive Information in Certain Cases and SSL_read()/SSL_write() Error State Bug May Bypass Decryption/Encryption in Certain Application Dependent Cases - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
[R2] SecurityCenter 5.6.1 Fixes Multiple Third-party Vulnerabilities - Security Advisory | Tenable® af854a3a-2127-422b-91ae-364da2661108 www.tenable.com Third Party Advisory
[R1] Nessus Network Monitor 5.5.0 Fixes One Third-party Vulnerability - Security Advisory | Tenable® af854a3a-2127-422b-91ae-364da2661108 www.tenable.com Third Party Advisory
Oracle Critical Patch Update Advisory - April 2019 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
CPU July 2018 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 710507 Gentoo Linux Open Secure Sockets Layer (OpenSSL) Multiple Vulnerabilities (GLSA 201712-03)
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