CVE-2018-11504

NameCVE-2018-11504
DescriptionThe islist 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-1499-1, DSA-4293-1
Debian Bugs901912

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
discount (PTS)buster2.2.4-1fixed
bullseye2.2.6-1fixed
sid, trixie, bookworm2.2.7-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
discountsourcejessie2.1.7-1+deb8u1DLA-1499-1
discountsourcestretch2.2.2-1+deb9u1DSA-4293-1
discountsource(unstable)2.2.4-1901912

Notes

https://github.com/Orc/discount/issues/189#issuecomment-392247798
POC: https://github.com/fCorleone/fuzz_programs/blob/master/discount/issue3_testcase
Fixed by https://github.com/Orc/discount/commit/b002a5a4db31e42dfb45451c059bc56941c17974

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