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[email protected]CVE-2020-14331

HistorySep 15, 2020 - 7:15 p.m.

CVE-2020-14331

2020-09-1519:15:12

CWE-787

[email protected]

web.nvd.nist.gov

364

cve-2020-14331

linux kernel

vga

console

resize

ioctl

vt_resize

out-of-bounds write

system crash

privilege escalation

data confidentiality

integrity

nvd

7.2 High

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

6.6 Medium

CVSS3

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

6.9 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

A flaw was found in the Linux kernel’s implementation of the invert video code on VGA consoles when a local attacker attempts to resize the console, calling an ioctl VT_RESIZE, which causes an out-of-bounds write to occur. This flaw allows a local user with access to the VGA console to crash the system, potentially escalating their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Affected configurations

NVD

Node

linuxlinux_kernelRange≤5.7.19

linuxlinux_kernelMatch5.8.0rc1

linuxlinux_kernelMatch5.8.0rc2

linuxlinux_kernelMatch5.8.0rc3

linuxlinux_kernelMatch5.8.0rc4

linuxlinux_kernelMatch5.8.0rc5

linuxlinux_kernelMatch5.8.0rc6

Node

redhatenterprise_linuxMatch7.0

redhatenterprise_linuxMatch8.0

CPENameOperatorVersion
linux:linux_kernellinux linux kernelle5.7.19
linux:linux_kernellinux linux kerneleq5.8.0

CPE	Name	Operator	Version
linux:linux_kernel	linux linux kernel	le	5.7.19
linux:linux_kernel	linux linux kernel	eq	5.8.0

CNA Affected

[
  {
    "product": "Linux Kernel",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "All versions of the Linux kernel"
      }
    ]
  }
]