CVE-2016-5699

Advisory lineage Upstream: 0 Downstream: 23
Modified
Published: 02 Sept 2016, 14:00
Last modified:06 Aug 2024, 01:07

Vulnerability Summary

Overall Risk (default)
medium
43/100
CVSS Score
6.1 MEDIUM
v3.0 (nvd)
EPSS Score
41.71% HIGH
42% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

02 Sept 2016, 14:00
Published
Vulnerability first disclosed
06 Aug 2024, 01:07
Last Modified
Vulnerability information updated

Description

CRLF injection vulnerability in the HTTPConnection.putheader function in urllib2 and urllib in CPython (aka Python) before 2.7.10 and 3.x before 3.4.4 allows remote attackers to inject arbitrary HTTP headers via CRLF sequences in a URL.

CVSS Metrics

  • v3.0•MEDIUM•Score: 6.1CVSS:3.0/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: 41.71%• Percentile: 97%

Techniques & Countermeasures

  • CWE-113•Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')

    The product receives data from an HTTP agent/component (e.g., web server, proxy, browser, etc.), but it does not neutralize or incorrectly neutralizes CR and LF characters before the data is included in outgoing HTTP headers.

Affected Systems

  • python•python

    ≤ 2.7.9 | 3.0 | 3.0.1 | 3.1.0 | 3.1.1 | 3.1.2 | 3.1.3 | 3.1.4 | 3.1.5 | 3.2.0 | 3.2.1 | 3.2.2 | 3.2.3 | 3.2.4 | 3.2.5 | 3.2.6 | 3.3.0 | 3.3.1 | 3.3.2 | 3.3.3 | 3.3.4 | 3.3.5 | 3.3.6 | 3.4.0 | 3.4.1 | 3.4.2 | 3.4.3

References (19)