Detections
Analytics
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
Plugin Details
Severity: Low
ID: 95525
File Name: gentoo_GLSA-201612-10.nasl
Version: 3.2
Type: local
Family: Gentoo Local Security Checks
Published: 12/5/2016
Updated: 1/11/2021
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 2.2
CVSS v2
Risk Factor: Low
Base Score: 1.9
Vector: CVSS2#AV:L/AC:M/Au:N/C:N/I:P/A:N
CVSS v3
Risk Factor: Low
Base Score: 2.5
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
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
Patch Publication Date: 12/4/2016
Reference Information
CVE: CVE-2015-5313
GLSA: 201612-10