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ubuntucveUbuntu.comUB:CVE-2020-27674
HistoryOct 22, 2020 - 12:00 a.m.

CVE-2020-27674

2020-10-2200:00:00
ubuntu.com
ubuntu.com
11

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

5.3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

EPSS

0.001

Percentile

17.6%

JSON

An issue was discovered in Xen through 4.14.x allowing x86 PV guest OS
users to gain guest OS privileges by modifying kernel memory contents,
because invalidation of TLB entries is mishandled during use of an
INVLPG-like attack technique.

Notes

Author Note
mdeslaur hypervisor packages are in universe. For issues in the hypervisor, add appropriate tags to each section, ex: Tags_xen: universe-binary
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchxen< anyUNKNOWN
ubuntu20.04noarchxen< anyUNKNOWN
ubuntu16.04noarchxen< anyUNKNOWN

Related

xen 1
osv 2
nessus 15
fedora 3
cvelist 1
openvas 10
redhatcve 1
prion 1
cve 1
debiancve 1
veracode 1
nvd 1
suse 2
debian 1
citrix 1
gentoo 1
xen
xen
x86 PV guest INVLPG-like flushes may leave stale TLB entries
2020-10-20 11:49:00
osv
osv
CVE-2020-27674
2020-10-22 21:15:14
xen - security update
2020-12-04 00:00:00
nessus
nessus
Fedora 33 : xen (2020-ec84c1565b)
2020-11-12 00:00:00
Fedora 32 : xen (2020-5398bfb466)
2020-11-12 00:00:00
Xen INVLPG-like flushes may leave stale TLB entries privilege escalation (XSA-286)
2021-01-19 00:00:00
fedora
fedora
[SECURITY] Fedora 32 Update: xen-4.13.2-1.fc32
2020-11-12 03:16:18
[SECURITY] Fedora 33 Update: xen-4.14.0-9.fc33
2020-11-12 03:08:44
[SECURITY] Fedora 31 Update: xen-4.12.3-8.fc31
2020-11-20 01:29:24
cvelist
cvelist
CVE-2020-27674
2020-10-22 20:33:07
openvas
openvas
Fedora: Security Advisory for xen (FEDORA-2020-5398bfb466)
2020-11-12 00:00:00
Fedora: Security Advisory for xen (FEDORA-2020-ec84c1565b)
2020-11-12 00:00:00
Fedora: Security Advisory for xen (FEDORA-2020-6dd36a716c)
2020-11-22 00:00:00
redhatcve
redhatcve
CVE-2020-27674
2020-10-23 19:04:57
prion
prion
Design/Logic Flaw
2020-10-22 21:15:00
cve
cve
CVE-2020-27674
2020-10-22 21:15:14
debiancve
debiancve
CVE-2020-27674
2020-10-22 21:15:14
veracode
veracode
CVE-2020-27674
2021-01-21 16:35:09
nvd
nvd
CVE-2020-27674
2020-10-22 21:15:14
suse
suse
Security update for xen (important)
2020-12-05 00:00:00
Security update for xen (important)
2020-12-07 00:00:00
debian
debian
[SECURITY] [DSA 4804-1] xen security update
2020-12-04 18:15:26
citrix
citrix
Citrix Hypervisor Security Update
2020-10-27 04:00:00
gentoo
gentoo
Xen: Multiple vulnerabilities
2020-11-11 00:00:00

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

5.3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

EPSS

0.001

Percentile

17.6%

JSON
Related for UB:CVE-2020-27674
xen1osv2nessus15fedora3cvelist1openvas10redhatcve1prion1cve1debiancve1veracode1nvd1suse2debian1citrix1gentoo1