CVE-2019-9740

Public on 2019-05-29
Modified on 2019-11-22
Description
An issue was discovered in urllib2 in Python 2.x through 2.7.16 and urllib in Python 3.x through 3.7.3. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the query string after a ? character) followed by an HTTP header or a Redis command. This is fixed in: v2.7.17, v2.7.17rc1, v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1, v3.5.8, v3.5.8rc1, v3.5.8rc2, v3.5.9; v3.6.10, v3.6.10rc1, v3.6.11, v3.6.11rc1, v3.6.12, v3.6.9, v3.6.9rc1; v3.7.4, v3.7.4rc1, v3.7.4rc2, v3.7.5, v3.7.5rc1, v3.7.6, v3.7.6rc1, v3.7.7, v3.7.7rc1, v3.7.8, v3.7.8rc1, v3.7.9.
Severity
Medium
CVSS v3 Base Score
6.5
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 python3 2019-07-18 17:40 ALAS2-2019-1247
Amazon Linux 1 python36 2019-05-29 19:20 ALAS-2019-1204
Amazon Linux 1 python34 2019-11-19 17:31 ALAS-2019-1324
Amazon Linux 1 python34 2019-07-17 23:50 ALAS-2019-1242
Amazon Linux 1 python35 2019-07-17 23:51 ALAS-2019-1243
Amazon Linux 1 python34 2019-11-19 17:31 ALAS-2019-1324
Amazon Linux 1 python34 2019-07-17 23:50 ALAS-2019-1242
Amazon Linux 1 python27 2019-06-25 21:32 ALAS-2019-1230

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:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N