7.8

CVE-2020-15852

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.5 <= 5.7.9
Xen ≫ Xen HwPlatformx86 Version <= 4.13.1
Netapp ≫ Cloud Backup Version-
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.33% 0.24
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd@nist.gov 4.6 3.9 6.4
AV:L/AC:L/Au:N/C:P/I:P/A:P
CWE-276 Incorrect Default Permissions

During installation, installed file permissions are set to allow anyone to modify those files.

http://www.openwall.com/lists/oss-security/2020/07/21/2
Third Party Advisory
Mailing List
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
Patch
Vendor Advisory
Mailing List
https://github.com/torvalds/linux/commit/cadfad870154e14f745ec845708bc17d166065f2
Patch
Third Party Advisory
https://security.netapp.com/advisory/ntap-20200810-0001/
Third Party Advisory