6.5
MEDIUM
CVE-2017-0896
Zulip Server Invitation Privilege Escalation Vulnerability
Description

Zulip Server 1.5.1 and below suffer from an error in the implementation of the invite_by_admins_only setting in the Zulip group chat application server that allowed an authenticated user to invite other users to join a Zulip organization even if the organization was configured to prevent this.

INFO

Published Date :

June 2, 2017, 5:29 p.m.

Last Modified :

Nov. 21, 2024, 3:03 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2017-0896 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 Zulip zulip_server
References to Advisories, Solutions, and Tools

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-2017-0896 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2017-0896 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]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference HackerOne https://groups.google.com/forum/#%21msg/zulip-announce/sUYeJv-fFmg/2TU2TLmNAwAJ [No types assigned]
    Removed Reference HackerOne https://groups.google.com/forum/#!msg/zulip-announce/sUYeJv-fFmg/2TU2TLmNAwAJ
  • CVE Modified by [email protected]

    Oct. 09, 2019

    Action Type Old Value New Value
    Added CWE HackerOne CWE-285
  • CWE Remap by [email protected]

    Oct. 03, 2019

    Action Type Old Value New Value
    Changed CWE CWE-264 CWE-862
  • CVE Modified by [email protected]

    Aug. 13, 2018

    Action Type Old Value New Value
    Removed Reference https://groups.google.com/forum/#%21msg/zulip-announce/sUYeJv-fFmg/2TU2TLmNAwAJ [Vendor Advisory]
    Added Reference https://groups.google.com/forum/#!msg/zulip-announce/sUYeJv-fFmg/2TU2TLmNAwAJ [No Types Assigned]
  • Initial Analysis by [email protected]

    Jun. 13, 2017

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:S/C:N/I:P/A:N)
    Added CVSS V3 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
    Changed Reference Type https://hackerone.com/reports/224210 No Types Assigned https://hackerone.com/reports/224210 Permissions Required
    Changed Reference Type https://github.com/zulip/zulip/commit/1f48fa27672170bba3b9a97384905bb04c18761b No Types Assigned https://github.com/zulip/zulip/commit/1f48fa27672170bba3b9a97384905bb04c18761b Issue Tracking, Patch
    Changed Reference Type https://groups.google.com/forum/#%21msg/zulip-announce/sUYeJv-fFmg/2TU2TLmNAwAJ No Types Assigned https://groups.google.com/forum/#%21msg/zulip-announce/sUYeJv-fFmg/2TU2TLmNAwAJ Vendor Advisory
    Added CWE CWE-264
    Added CPE Configuration OR *cpe:2.3:a:zulip:zulip_server:1.3.0:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.3.1:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.3.2:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.3.3:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.3.4:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.3.6:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.3.7:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.3.8:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.3.9:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.3.10:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.3.11:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.3.12:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.3.13:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.4.0:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.4.1:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.4.2:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.4.3:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.5.0:*:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:1.5.1:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jun. 05, 2017

    Action Type Old Value New Value
    Removed Reference https://groups.google.com/forum/#!msg/zulip-announce/sUYeJv-fFmg/2TU2TLmNAwAJ [No Types Assigned]
    Added Reference https://groups.google.com/forum/#%21msg/zulip-announce/sUYeJv-fFmg/2TU2TLmNAwAJ [No Types Assigned]
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-2017-0896 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-2017-0896 weaknesses.

Exploit Prediction

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

0.07 }} 0.01%

score

0.28077

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability