| Name | CVE-2017-18235 | 
| Description | An issue was discovered in Exempi before 2.4.3. The VPXChunk class in XMPFiles/source/FormatSupport/WEBP_Support.cpp does not ensure nonzero widths and heights, which allows remote attackers to cause a denial of service (assertion failure and application exit) via a crafted .webp file. | 
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) | 
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status | 
|---|
| exempi (PTS) | bullseye | 2.5.2-1 | fixed | 
|  | bullseye (security) | 2.5.2-1+deb11u1 | fixed | 
|  | bookworm | 2.6.3-1 | fixed | 
|  | forky, sid, trixie | 2.6.6-2 | fixed | 
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs | 
|---|
| exempi | source | wheezy | (not affected) |  |  |  | 
| exempi | source | (unstable) | 2.4.3-1 | low |  |  | 
Notes
[stretch] - exempi <no-dsa> (Minor issue)
[jessie] - exempi <no-dsa> (Minor issue)
[wheezy] - exempi <not-affected> (vulnerable code not present)
https://bugs.freedesktop.org/show_bug.cgi?id=101913
https://cgit.freedesktop.org/exempi/commit/?id=9e76a7782a54a242f18d609e7ba32bf1c430a5e4