CVE-2018-18385

Published: 16 October 2018

Asciidoctor in versions < 1.5.8 allows remote attackers to cause a denial of service (infinite loop). The loop was caused by the fact that Parser.next_block was not exhausting all the lines in the reader as the while loop expected it would. This was happening because the regular expression that detects any list was not agreeing with the regular expression that detects a specific list type. So the line kept getting pushed back onto the reader, hence causing the loop.

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
asciidoctor
Launchpad, Ubuntu, Debian
Upstream
Released (1.5.8-1)
Ubuntu 21.04 (Hirsute Hippo) Not vulnerable
(1.5.8-1)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(1.5.8-1)
Ubuntu 18.04 LTS (Bionic Beaver) Needed

Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(end of standard support, was needed)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was needs-triage)