PT-2021-14125 · Six Apart · Movable Type Premium Advanced+3

Published 2021-03-05 · Updated 2021-03-22 · CVE-2021-20665

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: Movable Type 7 versions 7.0.0 through 7 r.4705 Movable Type Advanced 7 versions 7.0.0 through 7 r.4705 Movable Type Premium version 1.39 and earlier Movable Type Premium Advanced version 1.39 and earlier

Description: A cross-site scripting issue exists in the Add asset screen of the Contents field, allowing remote attackers to inject arbitrary scripts via unspecified vectors.

Recommendations: For Movable Type 7 versions 7.0.0 through 7 r.4705, update to a version later than 7 r.4705. For Movable Type Advanced 7 versions 7.0.0 through 7 r.4705, update to a version later than 7 r.4705. For Movable Type Premium version 1.39 and earlier, update to a version later than 1.39. For Movable Type Premium Advanced version 1.39 and earlier, update to a version later than 1.39.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-20665

Affected Products

Movable Type 7

Movable Type Advanced 7

Movable Type Premium

Movable Type Premium Advanced

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2021-20665 · Security Note
• https://osv.dev/vulnerability/CVE-2021-20665 · Vendor Advisory
• https://movabletype.org/news/2021/02/mt-760-676-released.html · Vendor Advisory
• https://jvn.jp/en/jp/JVN66542874/index.html · Note
• https://t.me/cibsecurity/24513 · Telegram Post