CVE-2021-30477

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.

CVSS v3 4.3 MEDIUM
CVSS v2.0 4.0 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:N/I:P/A:N

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://blog.zulip.com/2021/04/14/zulip-server-3-4/	Release Notes Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-04-15 00:15

Updated : 2024-02-28 18:28

NVD link : CVE-2021-30477

Mitre link : CVE-2021-30477

CVE.ORG link : CVE-2021-30477

JSON object : View

Products Affected

zulip

zulip_server

CWE

NVD-CWE-noinfo

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