yaws vulnerabilities

A security issue affects these releases of Ubuntu and its
derivatives:

* Ubuntu 18.04 LTS

Summary

Several security issues were fixed in Yaws.

Software Description

* yaws - High performance HTTP 1.1 webserver written in Erlang

Details

It was discovered that Yaws did not properly sanitize XML input. A
remote attacker could use this vulnerability to execute an XML
External Entity (XXE) injection attack. (CVE-2020-24379)

It was discovered that Yaws mishandled certain input when running
CGI scripts. A remote attacker could use this vulnerability to
execute arbitrary commands. (CVE-2020-24916)

Update instructions

The problem can be corrected by updating your system to the
following package versions:

Ubuntu 18.04 LTS
erlang-yapp - 2.0.4+dfsg-2ubuntu0.1
erlang-yaws - 2.0.4+dfsg-2ubuntu0.1
yaws - 2.0.4+dfsg-2ubuntu0.1
yaws-mail - 2.0.4+dfsg-2ubuntu0.1

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary
changes.

References

* CVE-2020-24379
* CVE-2020-24916

--- Mystic BBS v1.12 A46 (Linux/64)
* Origin: BZ&BZ BBS (21:4/110)