| Name | CVE-2019-20056 |
| Description | stb_image.h (aka the stb image loader) 2.23, as used in libsixel and other products, has an assertion failure in stbi__shiftsigned. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| NVD severity | medium |
| Debian Bugs | 948103 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libsixel (PTS) | stretch | 1.5.2-2+deb9u1 | vulnerable |
| buster | 1.8.2-1+deb10u1 | vulnerable |
| bookworm, bullseye, sid | 1.8.6-2 | fixed |
| libstb (PTS) | buster | 0.0~git20180212.15.e6afb9c-1 | vulnerable |
| bookworm, bullseye, sid | 0.0~git20200713.b42009b+ds-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| libsixel | source | (unstable) | 1.8.6-1 | low | | 948103 |
| libstb | source | (unstable) | (unfixed) | low | | |
Notes
[buster] - libsixel <no-dsa> (Minor issue)
[stretch] - libsixel <no-dsa> (Minor issue)
[jessie] - libsixel <no-dsa> (Minor issue)
[bullseye] - libstb <no-dsa> (Minor issue)
[buster] - libstb <no-dsa> (Minor issue)
libsixel PR: https://github.com/saitoha/libsixel/issues/126
libsixel patch: https://github.com/saitoha/libsixel/commit/814f831555ea2492d442e784ab5d594f6a8e2e8d
libstb PR: https://github.com/nothings/stb/issues/886
libstb patch: https://github.com/nothings/stb/commit/bfaccab17a648b315543d366c63aee575a0756b7