CVE-2018-19870

NameCVE-2018-19870
DescriptionAn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-1627-1, DLA-1786-1, DLA-2377-1, DSA-4374-1
Debian Bugs923003

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
qt4-x11 (PTS)buster4:4.8.7+dfsg-18+deb10u1fixed
buster (security)4:4.8.7+dfsg-18+deb10u2fixed
qtbase-opensource-src (PTS)buster5.11.3+dfsg1-1+deb10u5fixed
buster (security)5.11.3+dfsg1-1+deb10u3fixed
bullseye5.15.2+dfsg-9fixed
bookworm5.15.8+dfsg-11fixed
trixie5.15.10+dfsg-7fixed
sid5.15.10+dfsg-7.2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
qt4-x11sourcejessie4:4.8.6+git64-g5dc8b2b+dfsg-3+deb8u2DLA-1786-1
qt4-x11sourcestretch4:4.8.7+dfsg-11+deb9u1DLA-2377-1
qt4-x11source(unstable)4:4.8.7+dfsg-18low923003
qtbase-opensource-srcsourceexperimental5.11.3+dfsg-1
qtbase-opensource-srcsourcejessie5.3.2+dfsg-4+deb8u3DLA-1627-1
qtbase-opensource-srcsourcestretch5.7.1+dfsg-3+deb9u1DSA-4374-1
qtbase-opensource-srcsource(unstable)5.11.3+dfsg-2low

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

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