An exploitable denial-of-service vulnerability exists in the X509 certificate parser of Python.org Python 2.7.11 / 3.6.6. A specially crafted X509 certificate can cause a NULL pointer dereference, resulting in a denial of service. An attacker can initiate or accept TLS connections using crafted certificates to trigger this vulnerability.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Python | Python | 2.7.0 (including) | 2.7.16 (excluding) |
| Python | Python | 3.4.0 (including) | 3.4.10 (excluding) |
| Python | Python | 3.5.0 (including) | 3.5.7 (excluding) |
| Python | Python | 3.6.0 (including) | 3.6.9 (excluding) |
| Python | Python | 3.7.0 (including) | 3.7.3 (excluding) |
| Red Hat Ansible Tower 3.4 for RHEL 7 | RedHat | ansible-tower-34/ansible-tower-memcached:1.4.15-28 | * |
| Red Hat Ansible Tower 3.4 for RHEL 7 | RedHat | ansible-tower-35/ansible-tower-memcached:1.4.15-28 | * |
| Red Hat Ansible Tower 3.4 for RHEL 7 | RedHat | ansible-tower-37/ansible-tower-memcached-rhel7:1.4.15-28 | * |
| Red Hat Enterprise Linux 7 | RedHat | python-0:2.7.5-86.el7 | * |
| Red Hat Enterprise Linux 8 | RedHat | python3-0:3.6.8-15.1.el8 | * |
| Red Hat Enterprise Linux 8 | RedHat | python3-0:3.6.8-15.1.el8 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | RedHat | rh-python36-python-0:3.6.9-2.el6 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | RedHat | rh-python36-python-0:3.6.9-2.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS | RedHat | rh-python36-python-0:3.6.9-2.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS | RedHat | rh-python36-python-0:3.6.9-2.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS | RedHat | rh-python36-python-0:3.6.9-2.el7 | * |
| Python2.7 | Ubuntu | bionic | * |
| Python2.7 | Ubuntu | cosmic | * |
| Python2.7 | Ubuntu | upstream | * |
| Python2.7 | Ubuntu | xenial | * |
| Python3.4 | Ubuntu | trusty | * |
| Python3.4 | Ubuntu | trusty/esm | * |
| Python3.5 | Ubuntu | trusty | * |
| Python3.5 | Ubuntu | trusty/esm | * |
| Python3.5 | Ubuntu | xenial | * |
| Python3.6 | Ubuntu | bionic | * |
| Python3.6 | Ubuntu | cosmic | * |
| Python3.7 | Ubuntu | upstream | * |