CVE-2018-14647
Python 3.6 and 2 others: Python's elementtree C accelerator failed to initialise Expat's hash salt during initialization.
CVE-2018-14647 is fixed in 28 products on 2 platforms, first by idle-python2.7 2.7.15~rc1-1ubuntu0.1, released September 23, 2018. 1 other affected product has no fix yet. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 2 platforms
CVSS
7.5
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.1091
95th percentile
Python's elementtree C accelerator failed to initialise Expat's hash salt during initialization. This could make it easy to conduct denial of service attacks against Expat by constructing an XML document that would cause pathological hash collisions in Expat's internal data structures, consuming large amounts CPU and RAM. The vulnerability exists in Python versions 3.7.0, 3.6.0 through 3.6.6, 3.5.0 through 3.5.6, 3.4.0 through 3.4.9, 2.7.0 through 2.7.15.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Python 3.6 | 3.6.7 | Python 3.6 3.6.7 | Oct 20, 2018 |
| Python 3.7 | 3.7.1 | Python 3.7 3.7.1 | Oct 20, 2018 |
| Linux | |||
| idle-python2.7 · Ubuntu 18.04.6 LTS (bionic) | 2.7.15~rc1-1ubuntu0.1 | idle-python2.7 2.7.15~rc1-1ubuntu0.1 | Sep 23, 2018 |
| idle-python3.6 · Ubuntu 18.04.6 LTS (bionic) | 3.6.7-1~18.04 | idle-python3.6 3.6.7-1~18.04 | Dec 22, 2018 |
| idle-python3.7 · Ubuntu 18.04.6 LTS (bionic) | 3.7.1-1~18.04 | idle-python3.7 3.7.1-1~18.04 | Sep 23, 2018 |
| libpython2.7 · Ubuntu 18.04.6 LTS (bionic) | 2.7.15~rc1-1ubuntu0.1 | libpython2.7 2.7.15~rc1-1ubuntu0.1 | Sep 23, 2018 |
| libpython2.7-minimal · Ubuntu 18.04.6 LTS (bionic) | 2.7.15~rc1-1ubuntu0.1 | libpython2.7-minimal 2.7.15~rc1-1ubuntu0.1 | Sep 23, 2018 |
| libpython2.7-stdlib · Ubuntu 18.04.6 LTS (bionic) | 2.7.15~rc1-1ubuntu0.1 | libpython2.7-stdlib 2.7.15~rc1-1ubuntu0.1 | Sep 23, 2018 |
| libpython2.7-testsuite · Ubuntu 18.04.6 LTS (bionic) | 2.7.15~rc1-1ubuntu0.1 | libpython2.7-testsuite 2.7.15~rc1-1ubuntu0.1 | Sep 23, 2018 |
| libpython3.6 · Ubuntu 18.04.6 LTS (bionic) | 3.6.7-1~18.04 | libpython3.6 3.6.7-1~18.04 | Dec 22, 2018 |
| libpython3.6-minimal · Ubuntu 18.04.6 LTS (bionic) | 3.6.7-1~18.04 | libpython3.6-minimal 3.6.7-1~18.04 | Dec 22, 2018 |
| libpython3.6-stdlib · Ubuntu 18.04.6 LTS (bionic) | 3.6.7-1~18.04 | libpython3.6-stdlib 3.6.7-1~18.04 | Dec 22, 2018 |
| libpython3.6-testsuite · Ubuntu 18.04.6 LTS (bionic) | 3.6.7-1~18.04 | libpython3.6-testsuite 3.6.7-1~18.04 | Dec 22, 2018 |
| libpython3.7 · Ubuntu 18.04.6 LTS (bionic) | 3.7.1-1~18.04 | libpython3.7 3.7.1-1~18.04 | Sep 23, 2018 |
| libpython3.7-minimal · Ubuntu 18.04.6 LTS (bionic) | 3.7.1-1~18.04 | libpython3.7-minimal 3.7.1-1~18.04 | Sep 23, 2018 |
| libpython3.7-stdlib · Ubuntu 18.04.6 LTS (bionic) | 3.7.1-1~18.04 | libpython3.7-stdlib 3.7.1-1~18.04 | Sep 23, 2018 |
| libpython3.7-testsuite · Ubuntu 18.04.6 LTS (bionic) | 3.7.1-1~18.04 | libpython3.7-testsuite 3.7.1-1~18.04 | Sep 23, 2018 |
| python2.7 · Ubuntu 18.04.6 LTS (bionic) | 2.7.15~rc1-1ubuntu0.1 | python2.7 2.7.15~rc1-1ubuntu0.1 | Sep 23, 2018 |
| python2.7-examples · Ubuntu 18.04.6 LTS (bionic) | 2.7.15~rc1-1ubuntu0.1 | python2.7-examples 2.7.15~rc1-1ubuntu0.1 | Sep 23, 2018 |
| python2.7-minimal · Ubuntu 18.04.6 LTS (bionic) | 2.7.15~rc1-1ubuntu0.1 | python2.7-minimal 2.7.15~rc1-1ubuntu0.1 | Sep 23, 2018 |
| python3.6 · Ubuntu 18.04.6 LTS (bionic) | 3.6.7-1~18.04 | python3.6 3.6.7-1~18.04 | Dec 22, 2018 |
| python3.6-examples · Ubuntu 18.04.6 LTS (bionic) | 3.6.7-1~18.04 | python3.6-examples 3.6.7-1~18.04 | Dec 22, 2018 |
| python3.6-minimal · Ubuntu 18.04.6 LTS (bionic) | 3.6.7-1~18.04 | python3.6-minimal 3.6.7-1~18.04 | Dec 22, 2018 |
| python3.6-venv · Ubuntu 18.04.6 LTS (bionic) | 3.6.7-1~18.04 | python3.6-venv 3.6.7-1~18.04 | Dec 22, 2018 |
| python3.7 · Ubuntu 18.04.6 LTS (bionic) | 3.7.1-1~18.04 | python3.7 3.7.1-1~18.04 | Sep 23, 2018 |
| python3.7-examples · Ubuntu 18.04.6 LTS (bionic) | 3.7.1-1~18.04 | python3.7-examples 3.7.1-1~18.04 | Sep 23, 2018 |
| python3.7-minimal · Ubuntu 18.04.6 LTS (bionic) | 3.7.1-1~18.04 | python3.7-minimal 3.7.1-1~18.04 | Sep 23, 2018 |
| python3.7-venv · Ubuntu 18.04.6 LTS (bionic) | 3.7.1-1~18.04 | python3.7-venv 3.7.1-1~18.04 | Sep 23, 2018 |
| No fix yet | |||
| Python 3.5 (Windows apps) | No fix yet | no-fix | n/a |