PT-2020-12816 · Zimbra · Zimbra

Published 2020-05-05 · Updated 2020-05-07 · CVE-2020-11737

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 Zimbra versions 9.0 through 9.0.0 Patch 1

Description A cross-site scripting (XSS) issue in the Web Client of Zimbra allows a remote attacker to execute arbitrary JavaScript by crafting links in an email message or calendar invite. The attack requires an A element containing an href attribute with a "www" substring followed immediately by a DOM event listener such as onmouseover.

Recommendations For Zimbra versions 9.0 through 9.0.0 Patch 1, update to 9.0.0 Patch 2 to resolve the issue. As a temporary workaround, consider restricting the use of the Web Client in Zimbra until the patch is applied. Avoid using the href attribute with a "www" substring in links within email messages or calendar invites until the issue is resolved.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2020-11737

Affected Products

Zimbra

References · 6

• https://blog.zimbra.com/2020/05/new-zimbra-9-kepler-patch-2 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-11737 · Vendor Advisory
• https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-11737 · Security Note
• https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P2 · Vendor Advisory
• https://t.me/cvenotify/3563 · Telegram Post