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4.3
MEDIUM CVSS 3.1
CVE-2019-18281
"Qt Out-of-Bounds Memory Access Denial of Service"
Description

An out-of-bounds memory access in the generateDirectionalRuns() function in qtextengine.cpp in Qt qtbase 5.11.x and 5.12.x before 5.12.5 allows attackers to cause a denial of service by crashing an application via a text file containing many directional characters.

INFO

Published Date :

Oct. 23, 2019, 3:15 p.m.

Last Modified :

Nov. 21, 2024, 4:32 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2019-18281 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Debian debian_linux
1 Qt qtbase
: Total Affected Vendor : 2 | Products : 2
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.1 MEDIUM [email protected]
Solution
An out-of-bounds memory access vulnerability exists in Qt, which can be remediated by updating the affected packages.
  • Update the affected packages.
  • Upgrade to Qt version 5.12.5 or later.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-18281.

URL Resource
https://bugreports.qt.io/browse/QTBUG-77819 Permissions Required
https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1848784 Issue Tracking Third Party Advisory
https://codereview.qt-project.org/c/qt/qtbase/+/271889 Patch Vendor Advisory
https://seclists.org/bugtraq/2019/Nov/4 Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202003-60
https://usn.ubuntu.com/4275-1/
https://www.debian.org/security/2019/dsa-4556 Third Party Advisory
https://bugreports.qt.io/browse/QTBUG-77819 Permissions Required
https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1848784 Issue Tracking Third Party Advisory
https://codereview.qt-project.org/c/qt/qtbase/+/271889 Patch Vendor Advisory
https://seclists.org/bugtraq/2019/Nov/4 Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202003-60
https://usn.ubuntu.com/4275-1/
https://www.debian.org/security/2019/dsa-4556 Third Party Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-18281 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-18281 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-100: Overflow Buffers Overflow Buffers CAPEC-123: Buffer Manipulation Buffer Manipulation

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-18281 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2019-18281 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://bugreports.qt.io/browse/QTBUG-77819
    Added Reference https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1848784
    Added Reference https://codereview.qt-project.org/c/qt/qtbase/+/271889
    Added Reference https://seclists.org/bugtraq/2019/Nov/4
    Added Reference https://security.gentoo.org/glsa/202003-60
    Added Reference https://usn.ubuntu.com/4275-1/
    Added Reference https://www.debian.org/security/2019/dsa-4556
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Mar. 26, 2020

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202003-60 [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 18, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4275-1/ [No Types Assigned]
  • Modified Analysis by [email protected]

    Jan. 09, 2020

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P)
    Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
    Changed Reference Type https://seclists.org/bugtraq/2019/Nov/4 No Types Assigned https://seclists.org/bugtraq/2019/Nov/4 Mailing List, Third Party Advisory
    Changed Reference Type https://www.debian.org/security/2019/dsa-4556 No Types Assigned https://www.debian.org/security/2019/dsa-4556 Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Nov. 04, 2019

    Action Type Old Value New Value
    Added Reference https://seclists.org/bugtraq/2019/Nov/4 [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 01, 2019

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2019/dsa-4556 [No Types Assigned]
  • Initial Analysis by [email protected]

    Oct. 25, 2019

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://bugreports.qt.io/browse/QTBUG-77819 No Types Assigned https://bugreports.qt.io/browse/QTBUG-77819 Permissions Required
    Changed Reference Type https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1848784 No Types Assigned https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1848784 Issue Tracking, Third Party Advisory
    Changed Reference Type https://codereview.qt-project.org/c/qt/qtbase/+/271889 No Types Assigned https://codereview.qt-project.org/c/qt/qtbase/+/271889 Patch, Vendor Advisory
    Added CWE NIST CWE-119
    Added CPE Configuration OR *cpe:2.3:a:qt:qtbase:*:*:*:*:*:*:*:* versions from (including) 5.11.0 up to (including) 5.11.3 *cpe:2.3:a:qt:qtbase:*:*:*:*:*:*:*:* versions from (including) 5.12.0 up to (excluding) 5.12.5
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 4.3
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 4.3
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

1.75 }} 0.38%

score

0.81497

percentile