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Debian Security Advisory DSA-4246-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
July 15, 2018                         https://www.debian.org/security/faq
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Package        : mailman
CVE ID         : CVE-2018-0618

Toshitsugu Yoneyama of Mitsui Bussan Secure Directions, Inc. discovered
that mailman, a web-based mailing list manager, is prone to a cross-site
scripting flaw allowing a malicious listowner to inject scripts into the
listinfo page, due to not validated input in the host_name field.

For the stable distribution (stretch), this problem has been fixed in
version 1:2.1.23-1+deb9u3.

We recommend that you upgrade your mailman packages.

For the detailed security status of mailman please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/mailman

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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