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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenSSL | OpenSSL | openssl-1.1.0, openssl-1.1.0a, openssl-1.1.0b, openssl-1.1.0c, openssl-1.0.2, openssl-1.0.2a, openssl-1.0.2b, openssl-1.0.2c, openssl-1.0.2d, openssl-1.0.2e, openssl-1.0.2f, openssl-1.0.2g, openssl-1.0.2h, openssl-1.0.2i, openssl-1.0.2j | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | openssl | 1.1.0d-1 | — |
| Debian 13 | openssl | 1.1.0d-1 | — |
| Debian 12 | openssl | 1.1.0d-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | openssl | 1.0.2g-1ubuntu4.6 | USN-3181-1 |
| Ubuntu 14.04 LTS | openssl | 1.0.1f-1ubuntu2.22 | USN-3181-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | java-1.8.0-ibm +5 | 1:1.8.0.5.20-1jpp.1.el7 | RHSA-2018:2568 |
| RHEL 6 | java-1.8.0-ibm +5 | 1:1.8.0.5.20-1jpp.1.el6_10 | RHSA-2018:2575 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Network Satellite 5 | java-1.8.0-ibm +1 | 1:1.8.0.5.20-1jpp.1.el6_10 | RHSA-2018:2713 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-apache-commons-daemon | 1.1.0-1.redhat_2.1.jbcs.el6 | RHSA-2018:2186, RHSA-2018:2185 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-apache-commons-daemon-jsvc | 1:1.1.0-1.redhat_2.jbcs.el6 | RHSA-2018:2186, RHSA-2018:2185 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-apr +1 | 1.6.3-14.jbcs.el6 | RHSA-2018:2186, RHSA-2018:2185 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-apr-util +8 | 1.6.1-9.jbcs.el6 | RHSA-2018:2186, RHSA-2018:2185 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-httpd +6 | 2.4.29-17.jbcs.el6 | RHSA-2018:2186, RHSA-2018:2185 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_auth_kerb | 5.4-36.jbcs.el6 | RHSA-2018:2186, RHSA-2018:2185 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_bmx | 0.9.6-17.GA.jbcs.el6 | RHSA-2018:2186, RHSA-2018:2185 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_cluster-native | 1.3.8-1.Final_redhat_2.jbcs.el6 | RHSA-2018:2186, RHSA-2018:2185 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_jk +2 | 1.2.43-1.redhat_1.jbcs.el6 | RHSA-2018:2186, RHSA-2018:2185 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_rt | 2.4.1-19.GA.jbcs.el6 | RHSA-2018:2186, RHSA-2018:2185 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_security | 2.9.1-23.GA.jbcs.el6 | RHSA-2018:2186, RHSA-2018:2185 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_ssl +1 | 1:2.4.29-17.jbcs.el6 | RHSA-2018:2186, RHSA-2018:2185 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-nghttp2 +1 | 1.29.0-8.jbcs.el6 | RHSA-2018:2186, RHSA-2018:2185 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-openssl +4 | 1:1.0.2n-11.jbcs.el6 | RHSA-2018:2186, RHSA-2018:2185 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | java-1_8_0-ibm | 1.8.0_sr5.20-3.6.2 | SUSE-SU-2018:3082-1 |
| SLES 12 SP3 | java-1_8_0-ibm | 1.8.0_sr5.20-30.36.1 | SUSE-SU-2018:2839-1 |
| SLES 12 SP2 | java-1_8_0-ibm | 1.8.0_sr5.20-30.36.1 | SUSE-SU-2018:2839-2, SUSE-SU-2018:2839-1 |
| SLES 12 SP2 | openssl | 1.0.2j-59.1 | SUSE-SU-2017:0441-1 |
| SLES 12 SP1 | java-1_8_0-ibm | 1.8.0_sr5.20-30.36.1 | SUSE-SU-2018:2839-1 |
| SLES 12 | nodejs4 | 4.7.3-14.1 | SUSE-SU-2017:0855-1 |
| SLES 12 | nodejs6 | 6.9.5-7.1 | SUSE-SU-2017:0431-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | java-1_8_0-ibm | 1.8.0_sr5.20-30.36.1 | SUSE-SU-2018:2839-1 |
| SLES for SAP 12 SP2 | java-1_8_0-ibm | 1.8.0_sr5.20-30.36.1 | SUSE-SU-2018:2839-1 |
| SLES for SAP 12 SP2 | openssl | 1.0.2j-59.1 | SUSE-SU-2017:0441-1 |
| SLES for SAP 12 SP1 | java-1_8_0-ibm | 1.8.0_sr5.20-30.36.1 | SUSE-SU-2018:2839-1 |
| SUSE OpenStack Cloud 7 | java-1_8_0-ibm | 1.8.0_sr5.20-30.36.1 | SUSE-SU-2018:2839-1 |
| SUSE Enterprise Storage 4 | java-1_8_0-ibm | 1.8.0_sr5.20-30.36.1 | SUSE-SU-2018:2839-1 |
| SUSE Enterprise Storage 4 | nodejs4 | 4.7.3-14.1 | SUSE-SU-2017:0855-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | openssl-1_0_0 | 1.0.2u-6.2 | openSUSE-SU-2024:11126-1 |
| openSUSE Tumbleweed | openssl-1_1 | 1.1.1l-1.2 | openSUSE-SU-2024:11127-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.4 | openssl | 1.0.2k-r0 | — |
| Alpine v3.3 | openssl | 1.0.2k-r0 | — |
| Alpine v3.2 | openssl | 1.0.2k-r0 | — |
Advisories 18
- RHSA-2018:2713 Red Hat Security Advisory: java-1.8.0-ibm security update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- RHSA-2018:2568 Red Hat Security Advisory: java-1.8.0-ibm security update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- RHSA-2018:2575 Red Hat Security Advisory: java-1.8.0-ibm security update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- RHSA-2018:2186 Red Hat Security Advisory: Red Hat JBoss Core Services Apache HTTP Server 2.4.29 RHEL 6 security update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- RHSA-2018:2185 Red Hat Security Advisory: Red Hat JBoss Core Services Apache HTTP Server 2.4.29 RHEL 7 security update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- USN-3181-1 openssl vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- SUSE-SU-2018:3082-1 Security update for java-1_8_0-ibm SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2839-2 Security update for java-1_8_0-ibm SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0855-1 Security update for nodejs4 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2839-1 Security update for java-1_8_0-ibm SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0441-1 Security update for openssl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0431-1 Security update for nodejs6 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11126-1 libopenssl-1_0_0-devel-1.0.2u-6.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-1459 Dell Data Protection Advisor: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 3, 2025
- WID-SEC-2025-1212 Oracle Communications Applications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 2, 2025
- openSUSE-SU-2024:11127-1 libopenssl-1_1-devel-1.1.1l-1.2 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- WID-SEC-2022-1914 OpenSSL: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 25, 2024
- WID-SEC-2023-1594 IBM Tivoli Network Manager: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 28, 2023
References
- RHSA-2018:2185 vendor-advisory
- RHSA-2018:2186 vendor-advisory
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- RHSA-2018:2713 vendor-advisory
- https://github.com/openssl/openssl/commit/a59b90bf491410f1f2bc4540cc21f1980fd14c5b
- FreeBSD-SA-17:02 vendor-advisory
- https://www.openssl.org/news/secadv/20170126.txt
- 1037717 vdb-entry
- RHSA-2018:2575 vendor-advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- https://www.tenable.com/security/tns-2017-04
- GLSA-201702-07 vendor-advisory
- RHSA-2018:2568 vendor-advisory
- 95814 vdb-entry
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03838en_us
- RHSA-2018:2187 vendor-advisory
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html