5.3

CVE-2020-27674

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Xen ≫ Xen HwPlatform x86 Version <= 4.14.0
Fedoraproject ≫ Fedora Version 31
Fedoraproject ≫ Fedora Version 32
Fedoraproject ≫ Fedora Version 33
Debian ≫ Debian Linux Version 10.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.36% 0.28
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 5.3 1.8 3.4
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
NIST 4.6 3.9 6.4
AV:L/AC:L/Au:N/C:P/I:P/A:P
CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://security.gentoo.org/glsa/202011-06
Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/
https://www.debian.org/security/2020/dsa-4804
Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/19/5
Third Party Advisory
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PZAM3LYJ5TZLSSNL3KXFILM46QKVTOUA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3U4LNKKXU4UP4Z5XP6TMIWSML3QODPE/
https://xenbits.xen.org/xsa/advisory-286.html
Patch
Vendor Advisory