Vulnerability Report

CVE-2020-17376

Title: Openstack Nova XML External Entity (XXE)

XML External Entity (XXE)

Proof Of Concept

No public PoC currently indexed for CVE-2020-17376.

CWE Category CWE-611
Published Date Aug 26, 2020
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 8.3 CVSS v3.1
Exploit Probability (EPSS)
1.71%

Vulnerability Summary

CVE-2020-17376: 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.

Impacted Vendors

O
openstack 1
P
panic 1

Reference Links

http://www.openwall.com/lists/oss-security/2020/08/25/4 https://launchpad.net/bugs/1890501 https://security.openstack.org/ossa/OSSA-2020-006.html http://www.openwall.com/lists/oss-security/2020/08/25/4 https://launchpad.net/bugs/1890501 https://security.openstack.org/ossa/OSSA-2020-006.html
CVSS v3.1
Source Entity [email protected]
Severity HIGH
8.3
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
6.5
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:S/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-17376 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

Affected Stack

No specific products linked.