| Name | CVE-2018-19870 |
| Description | An issue was discovered in Qt before 5.11.3. A malformed GIF image causes a NULL pointer dereference in QGifHandler resulting in a segmentation fault. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1627-1, DLA-1786-1, DLA-2377-1, DSA-4374-1 |
| Debian Bugs | 923003 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| qt4-x11 (PTS) | jessie, jessie (lts) | 4:4.8.6+git64-g5dc8b2b+dfsg-3+deb8u5 | fixed |
| stretch (security) | 4:4.8.7+dfsg-11+deb9u3 | fixed |
| stretch (lts), stretch | 4:4.8.7+dfsg-11+deb9u4 | fixed |
| buster (security), buster, buster (lts) | 4:4.8.7+dfsg-18+deb10u2 | fixed |
| qtbase-opensource-src (PTS) | jessie, jessie (lts) | 5.3.2+dfsg-4+deb8u7 | fixed |
| stretch (security) | 5.7.1+dfsg-3+deb9u3 | fixed |
| stretch (lts), stretch | 5.7.1+dfsg-3+deb9u5 | fixed |
| buster, buster (lts) | 5.11.3+dfsg1-1+deb10u7 | fixed |
| buster (security) | 5.11.3+dfsg1-1+deb10u6 | fixed |
| bullseye | 5.15.2+dfsg-9+deb11u1 | fixed |
| bookworm | 5.15.8+dfsg-11+deb12u2 | fixed |
| sid, trixie | 5.15.15+dfsg-2 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://blog.qt.io/blog/2018/12/04/qt-5-11-3-released-important-security-updates/
https://codereview.qt-project.org/#/c/235998/
affected code can be in src/gui/image/qgifhandler.cpp or in
src/plugins/imageformats/gif/qgifhandler.cpp depending on the version
https://github.com/qt/qtbase/commit/2841e2b61e32f26900bde987d469c8b97ea31999