CVE-2021-3967 : Improper Access Control in GitHub repository zulip/zulip prior to 4.10.

Improper Access Control in GitHub repository zulip/zulip prior to 4.10.

Published 2022-02-26 23:15:09

Updated 2022-08-05 11:31:55

Source huntr.dev

View at NVD, CVE.org

Vulnerability category: BypassGain privilege

Products affected by CVE-2021-3967

Zulip » Zulip
Versions before (<) 4.10
cpe:2.3:a:zulip:zulip:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.09%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 36 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
6.5	MEDIUM	AV:N/AC:L/Au:S/C:P/I:P/A:P	8.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: Single Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
4.1	MEDIUM	CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L	0.7	3.4	huntr.dev
Attack Vector: Network Attack Complexity: High Privileges Required: High User Interaction: None Scope: Unchanged Confidentiality: Low Integrity: Low Availability: Low
8.8	HIGH	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	2.8	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE-284 Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Assigned by: security@huntr.dev (Secondary)

https://huntr.dev/bounties/2928a625-0467-4a0a-b4e2-e27322786686

Improper Access Control vulnerability found in zulip
Exploit;Third Party Advisory
https://github.com/zulip/zulip/commit/d5db254ca8167995a1654d1c45ffc74b2fade39a

CVE-2021-3967: Only regenerate the API key by authing with the old key. · zulip/zulip@d5db254 · GitHub
Patch;Third Party Advisory

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