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prionPRIOn knowledge basePRION:CVE-2021-27379
HistoryFeb 18, 2021 - 5:15 p.m.

Design/Logic Flaw

2021-02-1817:15:00
PRIOn knowledge base
www.prio-n.com
1

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.1 High

AI Score

Confidence

High

5.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:P/I:P/A:C

0.0004 Low

EPSS

Percentile

5.4%

JSON

An issue was discovered in Xen through 4.11.x, allowing x86 Intel HVM guest OS users to achieve unintended read/write DMA access, and possibly cause a denial of service (host OS crash) or gain privileges. This occurs because a backport missed a flush, and thus IOMMU updates were not always correct. NOTE: this issue exists because of an incomplete fix for CVE-2020-15565.

CPENameOperatorVersion
debian_linuxeq10.0
xenge3.2.0
xenlt4.12.0

Related

ubuntucve 2
debiancve 2
cve 2
nessus 21
osv 4
veracode 1
redhatcve 2
xen 2
openvas 17
prion 1
debian 2
citrix 2
gentoo 1
fedora 2
suse 2
ubuntu 1
ubuntucve
ubuntucve
CVE-2021-27379
2021-02-18 00:00:00
CVE-2020-15565
2020-07-07 00:00:00
debiancve
debiancve
CVE-2021-27379
2021-02-18 17:15:00
CVE-2020-15565
2020-07-07 13:15:00
cve
cve
CVE-2021-27379
2021-02-18 17:15:00
CVE-2020-15565
2020-07-07 13:15:00
nessus
nessus
Xen Missed Flush DoS or Privilege Escalation (XSA-366)
2021-04-20 00:00:00
Xen Insufficient Cache Write-Back (XSA-321)
2020-07-10 00:00:00
SUSE SLES12 Security Update : xen (SUSE-SU-2021:1268-1)
2021-04-21 00:00:00
osv
osv
CVE-2020-15565
2020-07-07 13:15:10
xen - security update
2021-04-10 00:00:00
xen - security update
2020-07-12 00:00:00
veracode
veracode
Denial Of Service (DoS)
2020-08-06 21:33:34
redhatcve
redhatcve
CVE-2020-15565
2020-07-07 14:21:11
CVE-2021-27379
2021-02-19 15:12:38
xen
xen
insufficient cache write-back under VT-d
2020-07-07 12:00:00
missed flush in XSA-321 backport
2021-02-18 11:46:00
openvas
openvas
SUSE: Security Advisory (SUSE-SU-2021:1268-1)
2021-04-26 00:00:00
Debian: Security Advisory (DSA-4888-1)
2021-04-12 00:00:00
SUSE: Security Advisory (SUSE-SU-2021:1251-1)
2021-04-26 00:00:00
prion
prion
Design/Logic Flaw
2020-07-07 13:15:00
debian
debian
[SECURITY] [DSA 4888-1] xen security update
2021-04-10 15:38:33
[SECURITY] [DSA 4723-1] xen security update
2020-07-12 20:39:56
citrix
citrix
Citrix Hypervisor Security Update
2020-07-08 04:00:00
Citrix Hypervisor Security Update
2021-06-09 14:55:13
gentoo
gentoo
Xen: Multiple vulnerabilities
2020-07-26 00:00:00
fedora
fedora
[SECURITY] Fedora 31 Update: xen-4.12.3-3.fc31
2020-07-23 01:17:50
[SECURITY] Fedora 32 Update: xen-4.13.1-4.fc32
2020-07-16 01:15:33
suse
suse
Security update for xen (important)
2020-07-18 00:00:00
Security update for xen (important)
2020-07-15 00:00:00
ubuntu
ubuntu
Xen vulnerabilities
2022-09-19 00:00:00

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.1 High

AI Score

Confidence

High

5.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:P/I:P/A:C

0.0004 Low

EPSS

Percentile

5.4%

JSON
Related for PRION:CVE-2021-27379
ubuntucve2debiancve2cve2nessus21osv4veracode1redhatcve2xen2openvas17prion1debian2citrix2gentoo1fedora2suse2ubuntu1