Executive Summary

Informations
Name CVE-2021-28940 First vendor Publication 2021-04-02
Vendor Cve Last vendor Modification 2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 9.8
Base Score 9.8 Environmental Score 9.8
impact SubScore 5.9 Temporal Score 9.8
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Because of a incorrect escaped exec command in MagpieRSS in 0.72 in the /extlib/Snoopy.class.inc file, it is possible to add a extra command to the curl binary. This creates an issue on the /scripts/magpie_debug.php and /scripts/magpie_simple.php page that if you send a specific https url in the RSS URL field, you are able to execute arbitrary commands.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28940

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-116 Improper Encoding or Escaping of Output

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1

Sources (Detail)

https://github.com/kellan/magpierss/blob/04d2a88b97fdba5813d01dc0d56c772d9736...
https://pastebin.com/kpzHKKJu
https://www.exploit-db.com/exploits/49643
Source Url

Alert History

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Date Informations
2024-11-28 13:55:14
  • Multiple Updates
2022-12-13 21:27:45
  • Multiple Updates
2022-08-03 05:27:44
  • Multiple Updates
2021-05-04 14:09:53
  • Multiple Updates
2021-04-22 03:15:05
  • Multiple Updates
2021-04-08 09:22:59
  • Multiple Updates
2021-04-03 05:23:02
  • First insertion