PT-2020-20663 · Zulip+1 · Zulip Desktop+1

Matt Austin · Published 2020-03-18 · Updated 2020-03-20 · CVE-2020-9443

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Zulip Desktop versions 2.3.82 through 4.0.2

Description The issue allows for the loading of untrusted content in an Electron webview with web security disabled, which can be exploited for XSS in several ways.

Recommendations For Zulip Desktop versions 2.3.82 through 4.0.2, update to version 4.0.3 or later to resolve the issue. As a temporary workaround, consider disabling the Electron webview until a patch is available.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2020-9443

Affected Products

Electron

Zulip Desktop

References · 4

• https://osv.dev/vulnerability/CVE-2020-9443 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-9443 · Security Note
• https://blog.zulip.org/2020/02/29/zulip-desktop-4-0-3-security-release · Vendor Advisory
• https://t.me/cvenotify/1848 · Telegram Post