Published: 23/10/2019 Updated: 18/02/2020

CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6

CVSS v3 Base Score: 4.3 | Impact Score: 1.4 | Exploitability Score: 2.8

VMScore: 383

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

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

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qt qtbase
debian debian linux 9.0
debian debian linux 10.0

Several security issues were fixed in Qt ...

An out-of-bounds memory access was discovered in the Qt library, which could result in denial of service through a text file containing many directional characters The oldstable distribution (stretch) is not affected For the stable distribution (buster), this problem has been fixed in version 5113+dfsg1-1+deb10u1 We recommend that you upgrade ...

CWE-119 https://bugreports.qt.io/browse/QTBUG-77819 https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1848784 https://codereview.qt-project.org/c/qt/qtbase/+/271889 https://www.debian.org/security/2019/dsa-4556 https://seclists.org/bugtraq/2019/Nov/4 https://usn.ubuntu.com/4275-1/https://security.gentoo.org/glsa/202003-60 https://usn.ubuntu.com/4275-1/https://nvd.nist.gov

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CVE-2019-18281

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