FreeBSD : xen-tools -- delimiter injection vulnerabilities in pygrub (59f79c99-ba4d-11e6-ae1b-002590263bf5)

This script is Copyright (C) 2016-2017 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing a security-related update.

Description :

The Xen Project reports :

pygrub, the boot loader emulator, fails to quote (or sanity check) its
results when reporting them to its caller.

A malicious guest administrator can obtain the contents of sensitive
host files (an information leak). Additionally, a malicious guest
administrator can cause files on the host to be removed, causing a
denial of service. In some unusual host configurations, ability to
remove certain files may be usable for privilege escalation.

See also :

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=214936
https://xenbits.xen.org/xsa/advisory-198.html
http://www.nessus.org/u?526c1932

Solution :

Update the affected package.

Risk factor :

Medium / CVSS Base Score : 4.6
(CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P)

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 95511 ()

Bugtraq ID:

CVE ID: CVE-2016-9379
CVE-2016-9380

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