PT-2019-5885 · Qt Company+4 · Qt+4

Published 2019-10-23 · Updated 2021-05-06 · CVE-2019-18281

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Qt qtbase versions 5.11.x through 5.12.4

Description The issue is related to an out-of-bounds memory access in the generateDirectionalRuns() function. This can be exploited by attackers to cause a denial of service, crashing an application via a text file containing many directional characters. The vulnerability can be exploited remotely, allowing an attacker to cause a denial of service.

Recommendations For Qt qtbase versions 5.11.x through 5.12.4, update to version 5.12.5 or later to resolve the issue. As a temporary workaround, consider restricting the use of text files containing directional characters to minimize the risk of exploitation.

Fix

DoS

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

BDU:2021-03592

CESA-2020_1665

CVE-2019-18281

DSA-4556-1

MGASA-2019-0356

OESA-2021-1158

RHSA-2020:1665

RHSA-2020_1665

RLSA-2020:1665

USN-4275-1

Affected Products

Centos

Qt

Red Hat

Rocky Linux

Ubuntu

References · 84

• https://osv.dev/vulnerability/DEBIAN-CVE-2019-18281 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-03457 · Security Note
• https://security-tracker.debian.org/tracker/DSA-4556-1 · Vendor Advisory
• https://codereview.qt-project.org/c/qt/qtbase/+/271889 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4275-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-18281 · Security Note
• https://usn.ubuntu.com/4275-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-0569 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-18281 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-18281 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-03456 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19871 · Security Note
• https://debian.org/security/2019/dsa-4556 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-03458 · Security Note
• https://advisories.mageia.org/MGASA-2019-0356.html · Security Note