2.6
LOW
CVE-2011-4940
Python SimpleHTTPServer UTF-7 Encoding XSS Vulnerability
Description

The list_directory function in Lib/SimpleHTTPServer.py in SimpleHTTPServer in Python before 2.5.6c1, 2.6.x before 2.6.7 rc2, and 2.7.x before 2.7.2 does not place a charset parameter in the Content-Type HTTP header, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks against Internet Explorer 7 via UTF-7 encoding.

INFO

Published Date :

June 27, 2012, 10:18 a.m.

Last Modified :

Feb. 13, 2023, 3:24 a.m.

Remotely Exploitable :

Yes !

Impact Score :

2.9

Exploitability Score :

4.9
Affected Products

The following products are affected by CVE-2011-4940 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Python python

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2011-4940 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2011-4940 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Feb. 13, 2023

    Action Type Old Value New Value
    Changed Description CVE-2011-4940 python: potential XSS in SimpleHTTPServer's list_directory() The list_directory function in Lib/SimpleHTTPServer.py in SimpleHTTPServer in Python before 2.5.6c1, 2.6.x before 2.6.7 rc2, and 2.7.x before 2.7.2 does not place a charset parameter in the Content-Type HTTP header, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks against Internet Explorer 7 via UTF-7 encoding.
    Removed CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Removed CVSS V2 Red Hat, Inc. (AV:N/AC:H/Au:N/C:N/I:P/A:N)
    Removed Reference https://access.redhat.com/errata/RHSA-2012:0744 [No Types Assigned]
    Removed Reference https://access.redhat.com/errata/RHSA-2012:0745 [No Types Assigned]
    Removed Reference https://access.redhat.com/security/cve/CVE-2011-4940 [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 02, 2023

    Action Type Old Value New Value
    Changed Description The list_directory function in Lib/SimpleHTTPServer.py in SimpleHTTPServer in Python before 2.5.6c1, 2.6.x before 2.6.7 rc2, and 2.7.x before 2.7.2 does not place a charset parameter in the Content-Type HTTP header, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks against Internet Explorer 7 via UTF-7 encoding. CVE-2011-4940 python: potential XSS in SimpleHTTPServer's list_directory()
    Added CVSS V2 Red Hat, Inc. (AV:N/AC:H/Au:N/C:N/I:P/A:N)
    Added Reference https://access.redhat.com/errata/RHSA-2012:0744 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2012:0745 [No Types Assigned]
    Added Reference https://access.redhat.com/security/cve/CVE-2011-4940 [No Types Assigned]
  • CPE Deprecation Remap by [email protected]

    Oct. 25, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:python:python:2.7:*:*:*:*:*:*:* OR *cpe:2.3:a:python:python:2.7.0:*:*:*:*:*:*:*
  • Initial Analysis by [email protected]

    Jun. 27, 2012

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2011-4940 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2011-4940 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.42 }} 0.00%

score

0.70240

percentile

CVSS2 - Vulnerability Scoring System
Access Vector
Access Complexity
Authentication
Confidentiality
Integrity
Availability