CVE-2019-9740

Advisory lineage Upstream: 0 Downstream: 32
Modified
Published: 13 Mar 2019, 03:00
Last modified:04 Aug 2024, 22:01

Vulnerability Summary

Overall Risk (default)
medium
36/100
CVSS Score
6.1 MEDIUM
v3.1 (nvd)
EPSS Score
9.91% LOW
10% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

13 Mar 2019, 03:00
Published
Vulnerability first disclosed
04 Aug 2024, 22:01
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  • v2.0•MEDIUM•Score: 4.3AV:N/AC:M/Au:N/C:N/I:P/A:N

EPSS Trends

Current EPSS score: 9.91%• Percentile: 93%

Techniques & Countermeasures

  • CWE-93•Improper Neutralization of CRLF Sequences ('CRLF Injection')

    The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.

Affected Systems

  • python•python

    ≥ 2.0, < 2.7.17 | ≥ 3.5.0, < 3.5.8 | ≥ 3.6.0, < 3.6.9 | ≥ 3.7.0, < 3.7.4

References (29)