| Name | CVE-2018-11503 |
| Description | The isfootnote function in markdown.c in libmarkdown.a in DISCOUNT 2.2.3a allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted file, as demonstrated by mkd2html. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1499-1, DSA-4293-1 |
| Debian Bugs | 901912 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| discount (PTS) | bullseye | 2.2.6-1 | fixed |
| bookworm | 2.2.7-2 | fixed |
| sid, trixie | 2.2.7-2.1 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://github.com/Orc/discount/issues/189#issuecomment-392247798
POC: https://github.com/fCorleone/fuzz_programs/blob/master/discount/issue2_testcase
Fixed by https://github.com/Orc/discount/commit/b002a5a4db31e42dfb45451c059bc56941c17974