GLSA-201702-23 : Dropbear: Multiple vulnerabilities

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

The remote host is affected by the vulnerability described in GLSA-201702-23
(Dropbear: Multiple vulnerabilities)

Multiple vulnerabilities have been discovered in Dropbear. Please review
the CVE identifiers referenced below for details.

Impact :

A remote attacker could possibly execute arbitrary code with root
privileges if usernames containing special characters can be created on a
system. Also, a dbclient user who can control username or host arguments
could potentially run arbitrary code with the privileges of the process.
In addition, a remote attacker could entice a user to process a
specially crafted SSH key using dropbearconvert, possibly resulting in
execution of arbitrary code with the privileges of the process or a
Denial of Service condition.

Workaround :

There is no known workaround at this time.

See also :

https://security.gentoo.org/glsa/201702-23

Solution :

All Dropbear users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=net-misc/dropbear-2016.74'

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 97266 ()

Bugtraq ID:

CVE ID: CVE-2016-7406
CVE-2016-7407
CVE-2016-7408
CVE-2016-7409

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