CVE-2019-18348
Public on 2019-10-23
Modified on 2020-08-31
Description
A CRLF injection flaw was discovered in python in the way URLs are handled when doing an HTTP/HTTPS connection (e.g. through urlopen() or HTTPConnection). An attacker who can control the url parameter passed to urlopen method in the urllib/urllib2 modules can inject CRLF sequences and HTTP headers by abusing the "host" part of the URL.
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | python26 | 2025-04-29 | ALAS-2025-1972 | Fixed |
| Amazon Linux 1 | python27 | 2020-06-03 | ALAS-2020-1375 | Fixed |
| Amazon Linux 1 | python27 | 2020-07-29 | ALAS-2020-1407 | Fixed |
| Amazon Linux 1 | python34 | 2020-07-27 | ALAS-2020-1407 | Fixed |
| Amazon Linux 1 | python34 | 2020-08-31 | ALAS-2020-1429 | Fixed |
| Amazon Linux 1 | python35 | 2020-07-27 | ALAS-2020-1407 | Fixed |
| Amazon Linux 1 | python35 | 2020-08-27 | ALAS-2020-1429 | Fixed |
| Amazon Linux 1 | python36 | 2020-07-27 | ALAS-2020-1407 | Fixed |
| Amazon Linux 1 | python36 | 2020-08-31 | ALAS-2020-1428 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 6.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| NVD | CVSSv2 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
| NVD | CVSSv3 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |