| Name | CVE-2020-27818 |
| Description | A flaw was found in the check_chunk_name() function of pngcheck-2.4.0. An attacker able to pass a malicious file to be processed by pngcheck could cause a temporary denial of service, posing a low risk to application availability. |
| 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 | DLA-3032-1 |
| Debian Bugs | 976350 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| pngcheck (PTS) | buster | 2.3.0-7+deb10u1 | fixed |
| buster (security) | 3.0.3-1~deb10u2 | fixed | |
| bullseye | 2.3.0-13 | fixed | |
| bullseye (security) | 3.0.3-1~deb11u1 | fixed | |
| bookworm, sid | 3.0.3-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| pngcheck | source | stretch | 2.3.0-7+deb9u1 | DLA-3032-1 | ||
| pngcheck | source | buster | 2.3.0-7+deb10u1 | |||
| pngcheck | source | (unstable) | 2.3.0-13 | 976350 |
https://bugzilla.redhat.com/show_bug.cgi?id=1902011
Patch applied in Fedora: https://src.fedoraproject.org/rpms/pngcheck/blob/cc48791e34201caf7b686084b735d06cef66c974/f/pngcheck-2.4.0-overflow-bz1897485.patch