An Augeas security update has been released for both Debian GNU/Linux 8 and 9

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Debian Security Advisory DSA-3949-1 security@debian.org
https://www.debian.org/security/ Sebastien Delafond
August 21, 2017 https://www.debian.org/security/faq
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Package : augeas
CVE ID : CVE-2017-7555
Debian Bug : 872400

Han Han of Red Hat discovered that augeas, a configuration editing
tool, improperly handled some escaped strings. A remote attacker could
leverage this flaw by sending maliciously crafted strings, thus
causing an augeas-enabled application to crash or potentially execute
arbitrary code.

For the oldstable distribution (jessie), this problem has been fixed
in version 1.2.0-0.2+deb8u2.

For the stable distribution (stretch), this problem has been fixed in
version 1.8.0-1+deb9u1.

We recommend that you upgrade your augeas packages.

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/

  Augeas security update for Debian 8 and 9