Information disclosure in OpenSSL
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 13 fixed, 5 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-200.
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| OpenSSL | OpenSSL | 1.0.2-1.02m; 1.1.0-1.1.0g | — | No fix listed | CNA |
- OpenSSL VendorOpenSSL Affected 1.0.2-1.02m; 1.1.0-1.1.0g Fixed in — No fix listed CNA
CPE configurations NVD · 34
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:openssl:openssl:1.0.2:*:*:*:*:*:*:* | 1.0.2 | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.0.2:beta1:*:*:*:*:*:* | 1.0.2 beta1 | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.0.2:beta2:*:*:*:*:*:* | 1.0.2 beta2 | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.0.2:beta3:*:*:*:*:*:* | 1.0.2 beta3 | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.0.2a:*:*:*:*:*:*:* | 1.0.2a | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.0.2b:*:*:*:*:*:*:* | 1.0.2b | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.0.2c:*:*:*:*:*:*:* | 1.0.2c | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.0.2d:*:*:*:*:*:*:* | 1.0.2d | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.0.2e:*:*:*:*:*:*:* | 1.0.2e | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.0.2f:*:*:*:*:*:*:* | 1.0.2f | Vulnerable | OpenSSL |
- cpe:2.3:a:openssl:openssl:1.0.2:*:*:*:*:*:*:* Versions 1.0.2 Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.0.2:beta1:*:*:*:*:*:* Versions 1.0.2 beta1 Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.0.2:beta2:*:*:*:*:*:* Versions 1.0.2 beta2 Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.0.2:beta3:*:*:*:*:*:* Versions 1.0.2 beta3 Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.0.2a:*:*:*:*:*:*:* Versions 1.0.2a Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.0.2b:*:*:*:*:*:*:* Versions 1.0.2b Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.0.2c:*:*:*:*:*:*:* Versions 1.0.2c Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.0.2d:*:*:*:*:*:*:* Versions 1.0.2d Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.0.2e:*:*:*:*:*:*:* Versions 1.0.2e Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.0.2f:*:*:*:*:*:*:* Versions 1.0.2f Vulnerable ·OpenSSL
Show 24 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:openssl:openssl:1.0.2g:*:*:*:*:*:*:* | 1.0.2g | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.0.2h:*:*:*:*:*:*:* | 1.0.2h | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.0.2i:*:*:*:*:*:*:* | 1.0.2i | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.0.2j:*:*:*:*:*:*:* | 1.0.2j | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.0.2k:*:*:*:*:*:*:* | 1.0.2k | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.0.2l:*:*:*:*:*:*:* | 1.0.2l | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.0.2m:*:*:*:*:*:*:* | 1.0.2m | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.1.0:*:*:*:*:*:*:* | 1.1.0 | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.1.0a:*:*:*:*:*:*:* | 1.1.0a | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.1.0b:*:*:*:*:*:*:* | 1.1.0b | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.1.0c:*:*:*:*:*:*:* | 1.1.0c | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.1.0d:*:*:*:*:*:*:* | 1.1.0d | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.1.0e:*:*:*:*:*:*:* | 1.1.0e | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.1.0f:*:*:*:*:*:*:* | 1.1.0f | Vulnerable | OpenSSL |
| cpe:2.3:a:openssl:openssl:1.1.0g:*:*:*:*:*:*:* | 1.1.0g | Vulnerable | OpenSSL |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* | 4.0.0 – 4.1.2 | Vulnerable | NodeJS |
| cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:* | 4.2.0 to before 4.8.7 | Vulnerable | NodeJS |
| cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* | 6.0.0 – 6.8.1 | Vulnerable | NodeJS |
| cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:* | 6.9.0 to before 6.12.2 | Vulnerable | NodeJS |
| cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* | 8.0.0 – 8.8.1 | Vulnerable | NodeJS |
| cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:* | 8.9.0 to before 8.9.3 | Vulnerable | NodeJS |
| cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* | 9.0.0 to before 9.2.1 | Vulnerable | NodeJS |
- cpe:2.3:a:openssl:openssl:1.0.2g:*:*:*:*:*:*:* Versions 1.0.2g Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.0.2h:*:*:*:*:*:*:* Versions 1.0.2h Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.0.2i:*:*:*:*:*:*:* Versions 1.0.2i Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.0.2j:*:*:*:*:*:*:* Versions 1.0.2j Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.0.2k:*:*:*:*:*:*:* Versions 1.0.2k Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.0.2l:*:*:*:*:*:*:* Versions 1.0.2l Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.0.2m:*:*:*:*:*:*:* Versions 1.0.2m Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.1.0:*:*:*:*:*:*:* Versions 1.1.0 Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.1.0a:*:*:*:*:*:*:* Versions 1.1.0a Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.1.0b:*:*:*:*:*:*:* Versions 1.1.0b Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.1.0c:*:*:*:*:*:*:* Versions 1.1.0c Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.1.0d:*:*:*:*:*:*:* Versions 1.1.0d Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.1.0e:*:*:*:*:*:*:* Versions 1.1.0e Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.1.0f:*:*:*:*:*:*:* Versions 1.1.0f Vulnerable ·OpenSSL
- cpe:2.3:a:openssl:openssl:1.1.0g:*:*:*:*:*:*:* Versions 1.1.0g Vulnerable ·OpenSSL
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* Versions 4.0.0 – 4.1.2 Vulnerable ·NodeJS
- cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:* Versions 4.2.0 to before 4.8.7 Vulnerable ·NodeJS
- cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* Versions 6.0.0 – 6.8.1 Vulnerable ·NodeJS
- cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:* Versions 6.9.0 to before 6.12.2 Vulnerable ·NodeJS
- cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* Versions 8.0.0 – 8.8.1 Vulnerable ·NodeJS
- cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:* Versions 8.9.0 to before 8.9.3 Vulnerable ·NodeJS
- cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* Versions 9.0.0 to before 9.2.1 Vulnerable ·NodeJS
Remediation
Red Hat 4 advisories
- RHSA-2018:2186 Released 2018-07-12 · Red Hat rating ModerateRed Hat JBoss Core Services Apache HTTP Server 2.4.29 RHEL 6 security update
- Red Hat JBoss Core Services on RHEL 6 Server jbcs-httpd24-apache-commons-daemon-1.1.0-1.redhat_2.1.jbcs.el6, jbcs-httpd24-apache-commons-daemon-jsvc-1:1.1.0-1.redhat_2.jbcs.el6, jbcs-httpd24-apr-1.6.3-14.jbcs.el6 +34
- RHSA-2018:2185 Released 2018-07-12 · Red Hat rating ModerateRed Hat JBoss Core Services Apache HTTP Server 2.4.29 RHEL 7 security update
- Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-apache-commons-daemon-1.1.0-1.redhat_2.1.jbcs.el7, jbcs-httpd24-apache-commons-daemon-jsvc-1:1.1.0-1.redhat_2.jbcs.el7, jbcs-httpd24-apr-1.6.3-14.jbcs.el7 +34
- RHSA-2018:2187 Released 2018-07-12 · Red Hat rating ModerateRed Hat JBoss Core Services Apache HTTP Server 2.4.29 security update
- Red Hat JBoss Core Services
Show 1 more Red Hat advisories
- RHSA-2018:0998 Released 2018-04-10 · Red Hat rating Moderateopenssl security and bug fix update
- Red Hat Enterprise Linux Client (v. 7) openssl-1:1.0.2k-12.el7, openssl-libs-1:1.0.2k-12.el7
- Red Hat Enterprise Linux Client Optional (v. 7) openssl-devel-1:1.0.2k-12.el7, openssl-perl-1:1.0.2k-12.el7, openssl-static-1:1.0.2k-12.el7
- Red Hat Enterprise Linux ComputeNode (v. 7) openssl-1:1.0.2k-12.el7, openssl-libs-1:1.0.2k-12.el7
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) openssl-devel-1:1.0.2k-12.el7, openssl-perl-1:1.0.2k-12.el7, openssl-static-1:1.0.2k-12.el7
- Red Hat Enterprise Linux Server (v. 7) openssl-1:1.0.2k-12.el7, openssl-devel-1:1.0.2k-12.el7, openssl-devel-1:1.0.2k-12.el7.ppc +2
- Red Hat Enterprise Linux Server Optional (v. 7) openssl-perl-1:1.0.2k-12.el7, openssl-static-1:1.0.2k-12.el7, openssl-static-1:1.0.2k-12.el7.ppc
- Red Hat Enterprise Linux Workstation (v. 7) openssl-1:1.0.2k-12.el7, openssl-devel-1:1.0.2k-12.el7, openssl-libs-1:1.0.2k-12.el7
- Red Hat Enterprise Linux Workstation Optional (v. 7) openssl-perl-1:1.0.2k-12.el7, openssl-static-1:1.0.2k-12.el7
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) openssl-1:1.0.2k-12.el7, openssl-devel-1:1.0.2k-12.el7, openssl-libs-1:1.0.2k-12.el7
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) openssl-perl-1:1.0.2k-12.el7, openssl-static-1:1.0.2k-12.el7
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
OpenSSL — FreeBSD-SA-17:12
2 records Highest priority Priority HIGH 1 HIGH, 1 MEDIUM
Other records, highest priority first
- TI-2017-02853 Out-of-bounds read in OpenSSLPriority HIGH 66
- Advisory ·
OpenSSL — DSA-4065
2 records Highest priority Priority HIGH 1 HIGH, 1 MEDIUM
Other records, highest priority first
- TI-2017-02853 Out-of-bounds read in OpenSSLPriority HIGH 66
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat JBoss Enterprise Application Platform 5 | Affected | No fix planned: Out of support scope |
| Red Hat JBoss Enterprise Application Platform 6 | Affected | No fix planned: Will not fix |
| Red Hat JBoss Enterprise Web Server 2 | Affected | No fix planned: Will not fix |
| Red Hat JBoss Enterprise Web Server 3 | Affected | No fix planned: Will not fix |
| Red Hat JBoss Web Server 3 | Affected | No fix yet |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2018:0998 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2018:0998 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2018:0998 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2018:0998 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2018:0998 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2018:0998 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2018:0998 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2018:0998 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) | Fixed | RHSA-2018:0998 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) | Fixed | RHSA-2018:0998 |
| Red Hat JBoss Core Services | Fixed | RHSA-2018:2187 |
| Red Hat JBoss Core Services on RHEL 6 Server | Fixed | RHSA-2018:2186 |
| Red Hat JBoss Core Services on RHEL 7 Server | Fixed | RHSA-2018:2185 |
Not affected: 5 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Virtualization 3
Timeline
- 2026-10-02 Threatist record created from CVE-2017-3738
- 2026-10-03 Alias added: GHSA-gj3m-w8pf-46c5
References
Patch 8
- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
- http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
- https://github.com/openssl/openssl/commit/e502cc86df9dafded1694fceb3228ee34d11c11a
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
Advisory 17
- https://www.tenable.com/security/tns-2018-07
- https://www.tenable.com/security/tns-2018-04
- RHSA-2018:2185
- RHSA-2018:2186
- FreeBSD-SA-17:12
- GLSA-201712-03
- DSA-4157
- https://www.openssl.org/news/secadv/20171207.txt
- RHSA-2018:0998
- https://www.tenable.com/security/tns-2018-06
- DSA-4065
- https://nodejs.org/en/blog/vulnerability/december-2017-security-releases/
- https://www.tenable.com/security/tns-2017-16
- https://www.openssl.org/news/secadv/20180327.txt
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03881en_us
- RHSA-2018:2187
- https://security.netapp.com/advisory/ntap-20171208-0001/
More Openssl vulnerabilities
- TI-2022-01915 The c_rehash script allows command injection CVSS 3.1CRITICAL 9.8
- TI-2021-02645 SM2 Decryption Buffer Overflow CVSS 3.1CRITICAL 9.8
- TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
- TI-2022-01176 The c_rehash script allows command injection CVSS 3.1CRITICAL 9.8
- TI-2014-00154 The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly… KEVCVSS 3.1HIGH 7.5
- TI-2025-14107 Stack buffer overflow in CMS (Auth)EnvelopedData parsing CVSS 3.1HIGH 8.8
Sources
- CVE-2017-3738 · CVE Program
- CVE-2017-3738 · NVD
- FIRST EPSS
- GHSA-gj3m-w8pf-46c5 · GitHub Advisory Database · CC BY 4.0
- CVE-2017-3738 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences