Executive Summary

Informations
Name CVE-2020-15852 First vendor Publication 2020-07-20
Vendor Cve Last vendor Modification 2020-08-10

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 7.8
Base Score 7.8 Environmental Score 7.8
impact SubScore 5.9 Temporal Score 7.8
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 4.6 Attack Range Local
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15852

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-276 Incorrect Default Permissions

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 18
Os 3329
Os 198

Sources (Detail)

Source Url
CONFIRM https://security.netapp.com/advisory/ntap-20200810-0001/
MISC http://xenbits.xen.org/xsa/advisory-329.html
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca...
https://github.com/torvalds/linux/commit/cadfad870154e14f745ec845708bc17d1660...
MLIST http://www.openwall.com/lists/oss-security/2020/07/21/2

Alert History

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Date Informations
2020-09-17 01:28:03
  • Multiple Updates
2020-08-11 09:22:58
  • Multiple Updates
2020-08-10 17:22:55
  • Multiple Updates
2020-08-08 01:27:36
  • Multiple Updates
2020-08-07 12:28:08
  • Multiple Updates
2020-08-07 01:28:55
  • Multiple Updates
2020-08-01 09:22:59
  • Multiple Updates
2020-08-01 05:22:56
  • Multiple Updates
2020-07-29 21:23:17
  • Multiple Updates
2020-07-25 00:22:47
  • Multiple Updates
2020-07-22 01:27:15
  • Multiple Updates
2020-07-22 01:25:51
  • Multiple Updates
2020-07-21 21:23:11
  • Multiple Updates
2020-07-21 09:22:49
  • Multiple Updates
2020-07-21 00:22:52
  • First insertion