python before versions 2.7.15, 3.4.9, 3.5.6rc1, 3.6.5rc1 and 3.7.0 is vulnerable to catastrophic backtracking in pop3lib's apop() method. An attacker could use this flaw to cause denial of service.
| Software | From | Fixed in |
|---|---|---|
| python / python | 2.7.0 | 2.7.15 |
| python / python | 3.5.0 | 3.5.6 |
| python / python | 3.0.0 | 3.4.9 |
| python / python | 3.6.0.x | 3.6.5 |
| fedoraproject / fedora | 28 | 28.x |
| fedoraproject / fedora | 29 | 29.x |
| fedoraproject / fedora | 30 | 30.x |
| canonical / ubuntu_linux | 16.04 | 16.04.x |
| canonical / ubuntu_linux | 14.04 | 14.04.x |
| canonical / ubuntu_linux | 12.04 | 12.04.x |
| canonical / ubuntu_linux | 18.04 | 18.04.x |
| redhat / enterprise_linux_desktop | 7.0 | 7.0.x |
| redhat / enterprise_linux_workstation | 7.0 | 7.0.x |
| redhat / enterprise_linux_server | 7.0 | 7.0.x |
| redhat / ansible_tower | 3.3 | 3.3.x |
| debian / debian_linux | 8.0 | 8.0.x |
| debian / debian_linux | 9.0 | 9.0.x |