Executive Summary

Informations
Name CVE-2021-30477 First vendor Publication 2021-04-15
Vendor Cve Last vendor Modification 2022-07-12

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Overall CVSS Score 4.3
Base Score 4.3 Environmental Score 4.3
impact SubScore 1.4 Temporal Score 4.3
Exploitabality Sub Score 2.8
 
Attack Vector Network Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact Low Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:S/C:N/I:P/A:N)
Cvss Base Score 4 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

An issue was discovered in Zulip Server before 3.4. A bug in the implementation of replies to messages sent by outgoing webhooks to private streams meant that an outgoing webhook bot could be used to send messages to private streams that the user was not intended to be able to send messages to.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30477

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 20

Sources (Detail)

Source Url
MISC https://blog.zulip.com/2021/04/14/zulip-server-3-4/

Alert History

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Date Informations
2022-07-13 17:27:48
  • Multiple Updates
2021-05-04 14:09:53
  • Multiple Updates
2021-04-22 00:23:17
  • Multiple Updates
2021-04-20 09:22:54
  • Multiple Updates
2021-04-15 09:22:59
  • First insertion