CVE-2020-12267 — CRITICAL (9.8)

Vulnerability Description

setMarkdown in Qt before 5.14.2 has a use-after-free related to QTextMarkdownImporter::insertBlock.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Qt	Qt	5.14.1

Related Weaknesses (CWE)

CWE-416

References

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=20450ExploitIssue TrackingThird Party Advisory
https://codereview.qt-project.org/c/qt/qtbase/+/291706PatchThird Party Advisory
https://security.gentoo.org/glsa/202007-38Third Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=20450ExploitIssue TrackingThird Party Advisory
https://codereview.qt-project.org/c/qt/qtbase/+/291706PatchThird Party Advisory
https://security.gentoo.org/glsa/202007-38Third Party Advisory

FAQ

What is CVE-2020-12267?

CVE-2020-12267 is a vulnerability with a CVSS score of 9.8 (CRITICAL). setMarkdown in Qt before 5.14.2 has a use-after-free related to QTextMarkdownImporter::insertBlock.

How severe is CVE-2020-12267?

CVE-2020-12267 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2020-12267?

Check the references section above for vendor advisories and patch information. Affected products include: Qt Qt.