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.
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Openssl | Openssl | 1.0.2 (including) | 1.0.2 (including) |
| Openssl | Openssl | 1.0.2-beta1 (including) | 1.0.2-beta1 (including) |
| Openssl | Openssl | 1.0.2-beta2 (including) | 1.0.2-beta2 (including) |
| Openssl | Openssl | 1.0.2-beta3 (including) | 1.0.2-beta3 (including) |
| Openssl | Openssl | 1.0.2a (including) | 1.0.2a (including) |
| Openssl | Openssl | 1.0.2b (including) | 1.0.2b (including) |
| Openssl | Openssl | 1.0.2c (including) | 1.0.2c (including) |
| Openssl | Openssl | 1.0.2d (including) | 1.0.2d (including) |
| Openssl | Openssl | 1.0.2e (including) | 1.0.2e (including) |
| Openssl | Openssl | 1.0.2f (including) | 1.0.2f (including) |
| Openssl | Openssl | 1.0.2h (including) | 1.0.2h (including) |
| Openssl | Openssl | 1.0.2i (including) | 1.0.2i (including) |
| Openssl | Openssl | 1.1.0a (including) | 1.1.0a (including) |
| Openssl | Openssl | 1.1.0b (including) | 1.1.0b (including) |
| Openssl | Openssl | 1.1.0c (including) | 1.1.0c (including) |
| JBoss Core Services on RHEL 6 | RedHat | jbcs-httpd24-apache-commons-daemon-0:1.1.0-1.redhat_2.1.jbcs.el6 | * |
| JBoss Core Services on RHEL 6 | RedHat | jbcs-httpd24-apache-commons-daemon-jsvc-1:1.1.0-1.redhat_2.jbcs.el6 | * |
| JBoss Core Services on RHEL 6 | RedHat | jbcs-httpd24-apr-0:1.6.3-14.jbcs.el6 | * |
| JBoss Core Services on RHEL 6 | RedHat | jbcs-httpd24-apr-util-0:1.6.1-9.jbcs.el6 | * |
| JBoss Core Services on RHEL 6 | RedHat | jbcs-httpd24-httpd-0:2.4.29-17.jbcs.el6 | * |
| JBoss Core Services on RHEL 6 | RedHat | jbcs-httpd24-mod_auth_kerb-0:5.4-36.jbcs.el6 | * |
| JBoss Core Services on RHEL 6 | RedHat | jbcs-httpd24-mod_bmx-0:0.9.6-17.GA.jbcs.el6 | * |
| JBoss Core Services on RHEL 6 | RedHat | jbcs-httpd24-mod_cluster-native-0:1.3.8-1.Final_redhat_2.jbcs.el6 | * |
| JBoss Core Services on RHEL 6 | RedHat | jbcs-httpd24-mod_jk-0:1.2.43-1.redhat_1.jbcs.el6 | * |
| JBoss Core Services on RHEL 6 | RedHat | jbcs-httpd24-mod_rt-0:2.4.1-19.GA.jbcs.el6 | * |
| JBoss Core Services on RHEL 6 | RedHat | jbcs-httpd24-mod_security-0:2.9.1-23.GA.jbcs.el6 | * |
| JBoss Core Services on RHEL 6 | RedHat | jbcs-httpd24-nghttp2-0:1.29.0-8.jbcs.el6 | * |
| JBoss Core Services on RHEL 6 | RedHat | jbcs-httpd24-openssl-1:1.0.2n-11.jbcs.el6 | * |
| JBoss Core Services on RHEL 7 | RedHat | jbcs-httpd24-apache-commons-daemon-0:1.1.0-1.redhat_2.1.jbcs.el7 | * |
| JBoss Core Services on RHEL 7 | RedHat | jbcs-httpd24-apache-commons-daemon-jsvc-1:1.1.0-1.redhat_2.jbcs.el7 | * |
| JBoss Core Services on RHEL 7 | RedHat | jbcs-httpd24-apr-0:1.6.3-14.jbcs.el7 | * |
| JBoss Core Services on RHEL 7 | RedHat | jbcs-httpd24-apr-util-0:1.6.1-9.jbcs.el7 | * |
| JBoss Core Services on RHEL 7 | RedHat | jbcs-httpd24-httpd-0:2.4.29-17.jbcs.el7 | * |
| JBoss Core Services on RHEL 7 | RedHat | jbcs-httpd24-mod_auth_kerb-0:5.4-36.jbcs.el7 | * |
| JBoss Core Services on RHEL 7 | RedHat | jbcs-httpd24-mod_bmx-0:0.9.6-17.GA.jbcs.el7 | * |
| JBoss Core Services on RHEL 7 | RedHat | jbcs-httpd24-mod_cluster-native-0:1.3.8-1.Final_redhat_2.jbcs.el7 | * |
| JBoss Core Services on RHEL 7 | RedHat | jbcs-httpd24-mod_jk-0:1.2.43-1.redhat_1.jbcs.el7 | * |
| JBoss Core Services on RHEL 7 | RedHat | jbcs-httpd24-mod_rt-0:2.4.1-19.GA.jbcs.el7 | * |
| JBoss Core Services on RHEL 7 | RedHat | jbcs-httpd24-mod_security-0:2.9.1-23.GA.jbcs.el7 | * |
| JBoss Core Services on RHEL 7 | RedHat | jbcs-httpd24-nghttp2-0:1.29.0-8.jbcs.el7 | * |
| JBoss Core Services on RHEL 7 | RedHat | jbcs-httpd24-openssl-1:1.0.2n-11.jbcs.el7 | * |
| Red Hat Enterprise Linux 6 Supplementary | RedHat | java-1.8.0-ibm-1:1.8.0.5.20-1jpp.1.el6_10 | * |
| Red Hat Enterprise Linux 7 Supplementary | RedHat | java-1.8.0-ibm-1:1.8.0.5.20-1jpp.1.el7 | * |
| Red Hat Satellite 5.8 | RedHat | java-1.8.0-ibm-1:1.8.0.5.20-1jpp.1.el6_10 | * |
| Text-Only JBCS | RedHat | openssl | * |
| Openssl | Ubuntu | devel | * |
| Openssl | Ubuntu | xenial | * |
| Openssl | Ubuntu | yakkety | * |
There are many different kinds of mistakes that introduce information exposures. The severity of the error can range widely, depending on the context in which the product operates, the type of sensitive information that is revealed, and the benefits it may provide to an attacker. Some kinds of sensitive information include:
Information might be sensitive to different parties, each of which may have their own expectations for whether the information should be protected. These parties include:
Information exposures can occur in different ways:
It is common practice to describe any loss of confidentiality as an “information exposure,” but this can lead to overuse of CWE-200 in CWE mapping. From the CWE perspective, loss of confidentiality is a technical impact that can arise from dozens of different weaknesses, such as insecure file permissions or out-of-bounds read. CWE-200 and its lower-level descendants are intended to cover the mistakes that occur in behaviors that explicitly manage, store, transfer, or cleanse sensitive information.