CVE-2020-15852
Xen Linux Kernel I/O Port Escalation
Description
An issue was discovered in the Linux kernel 5.5 through 5.7.9, as used in Xen through 4.13.x for x86 PV guests. An attacker may be granted the I/O port permissions of an unrelated task. This occurs because tss_invalidate_io_bitmap mishandling causes a loss of synchronization between the I/O bitmaps of TSS and Xen, aka CID-cadfad870154.
INFO
Published Date :
July 20, 2020, 7:15 p.m.
Last Modified :
Dec. 3, 2022, 2:32 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Affected Products
The following products are affected by CVE-2020-15852
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-2020-15852.
| URL | Resource |
|---|---|
| http://www.openwall.com/lists/oss-security/2020/07/21/2 | Mailing List Third Party Advisory |
| http://xenbits.xen.org/xsa/advisory-329.html | Patch Third Party Advisory |
| https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cadfad870154e14f745ec845708bc17d166065f2 | Mailing List Patch Vendor Advisory |
| https://github.com/torvalds/linux/commit/cadfad870154e14f745ec845708bc17d166065f2 | Patch Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20200810-0001/ | Third Party Advisory |
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-2020-15852 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-15852 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 [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Dec. 03, 2022
Action Type Old Value New Value Changed Reference Type https://security.netapp.com/advisory/ntap-20200810-0001/ No Types Assigned https://security.netapp.com/advisory/ntap-20200810-0001/ Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:* *cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Aug. 10, 2020
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20200810-0001/ [No Types Assigned] -
Initial Analysis by [email protected]
Jul. 24, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type http://www.openwall.com/lists/oss-security/2020/07/21/2 No Types Assigned http://www.openwall.com/lists/oss-security/2020/07/21/2 Mailing List, Third Party Advisory Changed Reference Type http://xenbits.xen.org/xsa/advisory-329.html No Types Assigned http://xenbits.xen.org/xsa/advisory-329.html Patch, Third Party Advisory Changed Reference Type https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cadfad870154e14f745ec845708bc17d166065f2 No Types Assigned https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cadfad870154e14f745ec845708bc17d166065f2 Mailing List, Patch, Vendor Advisory Changed Reference Type https://github.com/torvalds/linux/commit/cadfad870154e14f745ec845708bc17d166065f2 No Types Assigned https://github.com/torvalds/linux/commit/cadfad870154e14f745ec845708bc17d166065f2 Patch, Third Party Advisory Added CWE NIST CWE-276 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (including) 5.7.9 Added CPE Configuration OR *cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* versions up to (including) 4.13.1 -
CVE Modified by [email protected]
Jul. 21, 2020
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2020/07/21/2 [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-2020-15852 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-2020-15852
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.12065
percentile