8.3
HIGH CVSS 3.1
CVE-2020-17376
Libvirt Nova Guest Device Exposure Vulnerability
Description

An issue was discovered in Guest.migrate in virt/libvirt/guest.py in OpenStack Nova before 19.3.1, 20.x before 20.3.1, and 21.0.0. By performing a soft reboot of an instance that has previously undergone live migration, a user may gain access to destination host devices that share the same paths as host devices previously referenced by the virtual machine on the source host. This can include block devices that map to different Cinder volumes at the destination than at the source. Only deployments allowing host-based connections (for instance, root and ephemeral devices) are affected.

INFO

Published Date :

Aug. 26, 2020, 7:15 p.m.

Last Modified :

Nov. 21, 2024, 5:07 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2020-17376 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Openstack nova
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.1 HIGH [email protected]
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-17376.

URL Resource
http://www.openwall.com/lists/oss-security/2020/08/25/4 Mailing List Patch Third Party Advisory
https://launchpad.net/bugs/1890501 Exploit Third Party Advisory
https://security.openstack.org/ossa/OSSA-2020-006.html Patch Vendor Advisory
http://www.openwall.com/lists/oss-security/2020/08/25/4 Mailing List Patch Third Party Advisory
https://launchpad.net/bugs/1890501 Exploit Third Party Advisory
https://security.openstack.org/ossa/OSSA-2020-006.html Patch Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-17376 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-17376 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-17376 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-17376 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2020/08/25/4
    Added Reference https://launchpad.net/bugs/1890501
    Added Reference https://security.openstack.org/ossa/OSSA-2020-006.html
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Sep. 14, 2020

    Action Type Old Value New Value
    Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:P/A:P)
    Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
  • Initial Analysis by [email protected]

    Sep. 01, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://www.openwall.com/lists/oss-security/2020/08/25/4 No Types Assigned http://www.openwall.com/lists/oss-security/2020/08/25/4 Mailing List, Patch, Third Party Advisory
    Changed Reference Type https://launchpad.net/bugs/1890501 No Types Assigned https://launchpad.net/bugs/1890501 Exploit, Third Party Advisory
    Changed Reference Type https://security.openstack.org/ossa/OSSA-2020-006.html No Types Assigned https://security.openstack.org/ossa/OSSA-2020-006.html Patch, Vendor Advisory
    Added CWE NIST CWE-611
    Added CPE Configuration OR *cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:* versions up to (excluding) 19.3.1 *cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:* versions from (including) 20.0.0 up to (excluding) 20.3.1 *cpe:2.3:a:openstack:nova:21.0.0:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 8.3
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 6.5
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.18 }} -0.36%

score

0.36091

percentile