external_links:
        - id: CVE-2017-5193
          url: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5193
        - id: IRSSI-SA-2017-01
          url: https://irssi.org/security/irssi_sa_2017_01.txt
exploitable_by: server
affected_versions: "*-0.8.20"
fixed_version: 0.8.21
release_date: 2017-01-05
git_commit: 6c6c42e3d1b49d90aacc0b67f8540471cae02a1d
credit: Joseph Bisch
description: |
        NULL pointer dereference in the nickcmp function