| Name | CVE-2018-7441 |
| Description | Leptonica through 1.75.3 uses hardcoded /tmp pathnames, which might allow local users to overwrite arbitrary files or have unspecified other impact by creating files in advance or winning a race condition, as demonstrated by /tmp/junk_split_image.ps in prog/splitimage2pdf.c. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | ELA-764-1, ELA-765-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| leptonlib (PTS) | jessie, jessie (lts) | 1.71-2.1+deb8u2 | fixed |
| stretch (security) | 1.74.1-1+deb9u1 | vulnerable |
| stretch (lts), stretch | 1.74.1-1+deb9u2 | fixed |
| buster | 1.76.0-1+deb10u1 | fixed |
| buster (security) | 1.76.0-1+deb10u2 | fixed |
| bullseye | 1.79.0-1.1+deb11u1 | fixed |
| sid, trixie, bookworm | 1.82.0-3 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://lists.debian.org/debian-lts/2018/02/msg00054.html
Not neutralised by kernel hardening, because subdirectories of /tmp are not hardened
https://github.com/DanBloomberg/leptonica/commit/dcaf546c748aaf13fd14289677037e83d749455f
The patch requires CVE-2018-7442 patch as underlying infrastructure.
The patch deactivates debugging functions by default and thus changes behaviour.