PT-2021-17964 · Mintty · Mintty

Published 2021-06-03 · Updated 2021-06-14 · CVE-2021-28848

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Mintty versions prior to 3.4.5

Description: The issue allows remote servers to cause a denial of service, resulting in a Windows GUI hang, by repeatedly changing the Mintty window title at high speed. This leads to many SetWindowTextA or SetWindowTextW calls, as there is no implementation of a delay, such as usleep, upon processing a title change.

Recommendations: For versions prior to 3.4.5, update to version 3.4.5 or later to resolve the issue. As a temporary workaround, consider restricting the ability of remote servers to change the Mintty window title to minimize the risk of exploitation.

Fix

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2021-28848

Affected Products

Mintty

References · 7

• https://github.com/mintty/mintty/compare/3.4.4...3.4.5 · Patch
• https://github.com/mintty/mintty/commit/bd52109993440b6996760aaccb66e68e782762b9 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-28848 · Security Note
• https://osv.dev/vulnerability/CVE-2021-28848 · Vendor Advisory
• https://mintty.github.io · Vendor Advisory
• https://t.me/cvenotify/16271 · Telegram Post
• https://t.me/cvenotify/15502 · Telegram Post