In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker controlling the unpacking format (similar to format string vulnerabilities) can trigger a buffer under-read in the String#unpack method, resulting in a massive and controlled information disclosure.
The product uses a function that accepts a format string as an argument, but the format string originates from an external source.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ruby | Ruby-lang | 2.2.0 (including) | 2.2.10 (excluding) |
| Ruby | Ruby-lang | 2.3.0 (including) | 2.3.7 (excluding) |
| Ruby | Ruby-lang | 2.4.0 (including) | 2.4.4 (excluding) |
| Ruby | Ruby-lang | 2.5.0 (including) | 2.5.1 (excluding) |
| Ruby | Ruby-lang | 2.6.0-preview1 (including) | 2.6.0-preview1 (including) |
| Red Hat Enterprise Linux 7 | RedHat | ruby-0:2.0.0.648-36.el7 | * |
| Red Hat Enterprise Linux 7.4 Advanced Update Support | RedHat | ruby-0:2.0.0.648-36.el7_4 | * |
| Red Hat Enterprise Linux 7.4 Telco Extended Update Support | RedHat | ruby-0:2.0.0.648-36.el7_4 | * |
| Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions | RedHat | ruby-0:2.0.0.648-36.el7_4 | * |
| Red Hat Enterprise Linux 7.5 Extended Update Support | RedHat | ruby-0:2.0.0.648-36.el7_5 | * |
| Red Hat Enterprise Linux 7.6 Extended Update Support | RedHat | ruby-0:2.0.0.648-37.el7_6 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | RedHat | rh-ruby23-ruby-0:2.3.8-69.el6 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | RedHat | rh-ruby24-ruby-0:2.4.5-91.el6 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | RedHat | rh-ruby23-ruby-0:2.3.8-69.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | RedHat | rh-ruby24-ruby-0:2.4.5-91.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | RedHat | rh-ruby25-ruby-0:2.5.3-6.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS | RedHat | rh-ruby23-ruby-0:2.3.8-69.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS | RedHat | rh-ruby24-ruby-0:2.4.5-91.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS | RedHat | rh-ruby25-ruby-0:2.5.3-6.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS | RedHat | rh-ruby23-ruby-0:2.3.8-69.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS | RedHat | rh-ruby24-ruby-0:2.4.5-91.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS | RedHat | rh-ruby25-ruby-0:2.5.3-6.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS | RedHat | rh-ruby23-ruby-0:2.3.8-69.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS | RedHat | rh-ruby24-ruby-0:2.4.5-91.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS | RedHat | rh-ruby25-ruby-0:2.5.3-6.el7 | * |
| Ruby1.9.1 | Ubuntu | trusty | * |
| Ruby2.0 | Ubuntu | trusty | * |
| Ruby2.3 | Ubuntu | artful | * |
| Ruby2.3 | Ubuntu | esm-infra/xenial | * |
| Ruby2.3 | Ubuntu | xenial | * |
| Ruby2.5 | Ubuntu | bionic | * |
| Ruby2.5 | Ubuntu | devel | * |
| Ruby2.5 | Ubuntu | esm-infra/bionic | * |