CVE-2019-18424
Xen DMA Privilege Escalation Vulnerability
Description
An issue was discovered in Xen through 4.12.x allowing attackers to gain host OS privileges via DMA in a situation where an untrusted domain has access to a physical device. This occurs because passed through PCI devices may corrupt host memory after deassignment. When a PCI device is assigned to an untrusted domain, it is possible for that domain to program the device to DMA to an arbitrary address. The IOMMU is used to protect the host from malicious DMA by making sure that the device addresses can only target memory assigned to the guest. However, when the guest domain is torn down, or the device is deassigned, the device is assigned back to dom0, thus allowing any in-flight DMA to potentially target critical host data. An untrusted domain with access to a physical device can DMA into host memory, leading to privilege escalation. Only systems where guests are given direct access to physical devices capable of DMA (PCI pass-through) are vulnerable. Systems which do not use PCI pass-through are not vulnerable.
INFO
Published Date :
Oct. 31, 2019, 2:15 p.m.
Last Modified :
Nov. 21, 2024, 4:33 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
0.9
Affected Products
The following products are affected by CVE-2019-18424
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.
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-2019-18424.
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-2019-18424 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-18424 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://lists.opensuse.org/opensuse-security-announce/2019-11/msg00037.html Added Reference http://www.openwall.com/lists/oss-security/2019/10/31/6 Added Reference http://xenbits.xen.org/xsa/advisory-302.html Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2BQKX7M2RHCWDBKNPX4KEBI3MJIH6AYZ/ Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I5WWPW4BSZDDW7VHU427XTVXV7ROOFFW/ Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZYATWNUGHRBG6I3TC24YHP5Y3J7I6KH/ Added Reference https://seclists.org/bugtraq/2020/Jan/21 Added Reference https://security.gentoo.org/glsa/202003-56 Added Reference https://www.debian.org/security/2020/dsa-4602 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2BQKX7M2RHCWDBKNPX4KEBI3MJIH6AYZ/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I5WWPW4BSZDDW7VHU427XTVXV7ROOFFW/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZYATWNUGHRBG6I3TC24YHP5Y3J7I6KH/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/2BQKX7M2RHCWDBKNPX4KEBI3MJIH6AYZ/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/I5WWPW4BSZDDW7VHU427XTVXV7ROOFFW/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/IZYATWNUGHRBG6I3TC24YHP5Y3J7I6KH/ -
Modified Analysis by [email protected]
Mar. 29, 2023
Action Type Old Value New Value Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00037.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00037.html Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/2BQKX7M2RHCWDBKNPX4KEBI3MJIH6AYZ/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/2BQKX7M2RHCWDBKNPX4KEBI3MJIH6AYZ/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/I5WWPW4BSZDDW7VHU427XTVXV7ROOFFW/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/I5WWPW4BSZDDW7VHU427XTVXV7ROOFFW/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/IZYATWNUGHRBG6I3TC24YHP5Y3J7I6KH/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/IZYATWNUGHRBG6I3TC24YHP5Y3J7I6KH/ Mailing List, Third Party Advisory Changed Reference Type https://seclists.org/bugtraq/2020/Jan/21 No Types Assigned https://seclists.org/bugtraq/2020/Jan/21 Mailing List, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/202003-56 No Types Assigned https://security.gentoo.org/glsa/202003-56 Third Party Advisory Changed Reference Type https://www.debian.org/security/2020/dsa-4602 No Types Assigned https://www.debian.org/security/2020/dsa-4602 Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Mar. 26, 2020
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202003-56 [No Types Assigned] -
CVE Modified by [email protected]
Jan. 14, 2020
Action Type Old Value New Value Added Reference https://seclists.org/bugtraq/2020/Jan/21 [No Types Assigned] -
CVE Modified by [email protected]
Jan. 14, 2020
Action Type Old Value New Value Added Reference https://www.debian.org/security/2020/dsa-4602 [No Types Assigned] -
CVE Modified by [email protected]
Nov. 28, 2019
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/IZYATWNUGHRBG6I3TC24YHP5Y3J7I6KH/ [No Types Assigned] -
CVE Modified by [email protected]
Nov. 19, 2019
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/I5WWPW4BSZDDW7VHU427XTVXV7ROOFFW/ [No Types Assigned] -
CVE Modified by [email protected]
Nov. 17, 2019
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/2BQKX7M2RHCWDBKNPX4KEBI3MJIH6AYZ/ [No Types Assigned] -
CVE Modified by [email protected]
Nov. 14, 2019
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00037.html [No Types Assigned] -
Initial Analysis by [email protected]
Nov. 07, 2019
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:M/Au:N/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type http://www.openwall.com/lists/oss-security/2019/10/31/6 No Types Assigned http://www.openwall.com/lists/oss-security/2019/10/31/6 Mailing List, Mitigation, Third Party Advisory Changed Reference Type http://xenbits.xen.org/xsa/advisory-302.html No Types Assigned http://xenbits.xen.org/xsa/advisory-302.html Mitigation, Patch, Vendor Advisory Added CWE NIST CWE-78 Added CPE Configuration OR *cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* versions up to (including) 4.12.1 -
CVE Modified by [email protected]
Oct. 31, 2019
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2019/10/31/6 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-18424 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-2019-18424
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.42 }} 0.12%
score
0.73778
percentile