| Name | CVE-2019-18281 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more) |
| References | DSA-4556-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| qtbase-opensource-src (PTS) | buster | 5.11.3+dfsg1-1+deb10u5 | fixed |
| buster (security) | 5.11.3+dfsg1-1+deb10u3 | fixed | |
| bullseye | 5.15.2+dfsg-9 | fixed | |
| bookworm, sid | 5.15.8+dfsg-11 | fixed | |
| qtbase-opensource-src-gles (PTS) | bullseye | 5.15.2+dfsg-4 | fixed |
| bookworm, sid | 5.15.8+dfsg-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| qtbase-opensource-src | source | jessie | (not affected) | |||
| qtbase-opensource-src | source | stretch | (not affected) | |||
| qtbase-opensource-src | source | buster | 5.11.3+dfsg1-1+deb10u1 | DSA-4556-1 | ||
| qtbase-opensource-src | source | (unstable) | 5.12.5+dfsg-2 | |||
| qtbase-opensource-src-gles | source | (unstable) | 5.12.5+dfsg-1 |
[buster] - qtbase-opensource-src <no-dsa> (Minor issue)
[stretch] - qtbase-opensource-src <not-affected> (Vulnerable code not present)
[jessie] - qtbase-opensource-src <not-affected> (Vulnerable code not present)
https://github.com/qt/qtbase/commit/af6ac444c97ed2dc234f93fe457440c9da5482ea
https://bugreports.qt.io/browse/QTBUG-77819