CVE-2019-19775 : The image thumbnailing handler in Zulip Server versions 1.9.0 to before 2.0.8 al

The image thumbnailing handler in Zulip Server versions 1.9.0 to before 2.0.8 allowed an open redirect that was visible to logged-in users.

Published 2019-12-18 04:15:15

Updated 2019-12-18 20:29:25

Source MITRE

View at NVD, CVE.org

Vulnerability category: Open redirect

Products affected by CVE-2019-19775

Zulip » Zulip Server
Versions from including (>=) 1.9.0 and before (<) 2.0.8
cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.27%

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

~ 50 %

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

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:N	8.6	4.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: None
6.1	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	2.8	2.7	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Changed Confidentiality: Low Integrity: Low Availability: None

CWE-601 URL Redirection to Untrusted Site ('Open Redirect')

The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.

Assigned by: nvd@nist.gov (Primary)

https://github.com/zulip/zulip/commit/b7c87a4d82397a5e6ac169b6098bed0b1ae7a583

CVE-2019-19775: Close open redirect in thumbnail view. · zulip/zulip@b7c87a4 · GitHub
Patch;Third Party Advisory
https://blog.zulip.org/2019/12/13/zulip-server-2-0-8-security-release/

Zulip 2.0.8 security release
Release Notes;Vendor Advisory

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