CVE-2018-14647
Public on 2018-09-25
Modified on 2019-01-12
Description
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 contructing an XML document that would cause pathological hash collisions in Expat's internal data structures, consuming large amounts CPU and RAM.
Severity
Medium
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Core | python3 | 2018-12-17 | ALAS2-2018-1132 | Fixed |
| Amazon Linux 1 | python34 | 2018-12-20 | ALAS-2018-1132 | Fixed |
| Amazon Linux 1 | python35 | 2018-11-05 | ALAS-2018-1101 | Fixed |
| Amazon Linux 1 | python36 | 2018-12-20 | ALAS-2018-1132 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVD | CVSSv2 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| NVD | CVSSv3 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |