Vulnerability Details : CVE-2019-18281
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.
Vulnerability category: OverflowDenial of service
Products affected by CVE-2019-18281
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:qt:qtbase:*:*:*:*:*:*:*:*
- cpe:2.3:a:qt:qtbase:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-18281
1.28%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 86 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-18281
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
4.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
2.8
|
1.4
|
NIST |
CWE ids for CVE-2019-18281
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-18281
-
https://usn.ubuntu.com/4275-1/
USN-4275-1: Qt vulnerabilities | Ubuntu security notices
-
https://security.gentoo.org/glsa/202003-60
QtCore: Multiple vulnerabilities (GLSA 202003-60) — Gentoo security
-
https://bugreports.qt.io/browse/QTBUG-77819
Qt Account LoginPermissions Required
-
https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1848784
Bug #1848784 “Crash in Qt 5.12.2” : Bugs : qtbase-opensource-src package : UbuntuIssue Tracking;Third Party Advisory
-
https://www.debian.org/security/2019/dsa-4556
Debian -- Security Information -- DSA-4556-1 qtbase-opensource-srcThird Party Advisory
-
https://codereview.qt-project.org/c/qt/qtbase/+/271889
Patch;Vendor Advisory
-
https://seclists.org/bugtraq/2019/Nov/4
Bugtraq: [SECURITY] [DSA 4556-1] qtbase-opensource-src security updateMailing List;Third Party Advisory
Jump to