Detections
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GLSA-201612-10 : libvirt: Directory traversal

low Nessus Plugin ID 95525

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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-201612-10 (libvirt: Directory traversal)

 Normally, only privileged users can coerce libvirt into creating or opening existing files using the virStorageVol APIs; and such users already have full privilege to create any domain XML.
 But in the case of fine-grained ACLs, it is feasible that a user can be granted storage_vol:create but not domain:write, and it violates assumptions if such a user can abuse libvirt to access files outside of the storage pool.
 Impact :

 When fine-grained Access Control Lists (ACL) are in effect, an authenticated local user with storage_vol:create permission but without domain:write permission maybe able to create or access arbitrary files outside of the storage pool.
 Workaround :

 Don’t make use of fine-grained Access Control Lists (ACL) in libvirt;
 In Gentoo, libvirt’s ACL support is disable by default unless you enable the “policykit” USE flag.

Solution

All libvirt users should upgrade to the latest version:
 # emerge --sync # emerge --ask --oneshot --verbose '>=app-emulation/libvirt-1.2.21-r1'

See Also

https://security.gentoo.org/glsa/201612-10

Plugin Details

Severity: Low

ID: 95525

File Name: gentoo_GLSA-201612-10.nasl

Version: 3.3

Type: local

Published: 12/5/2016

Updated: 1/15/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.2

CVSS v2

Risk Factor: Low

Base Score: 1.9

Temporal Score: 1.4

Vector: CVSS2#AV:L/AC:M/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2015-5313

CVSS v3

Risk Factor: Low

Base Score: 2.5

Temporal Score: 2.2

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:libvirt, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Ease: No known exploits are available

Patch Publication Date: 12/4/2016

Reference Information

CVE: CVE-2015-5313

GLSA: 201612-10