CVE-2020-14331

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.

CVSS v3.0 6.6 MEDIUM
CVSS v2.0 7.2 HIGH

6.6^/10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 0.7 / Impact : 5.9

Attack Vector PHYSICAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

V2 Legend

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

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1858679	Issue Tracking Third Party Advisory
https://lists.openwall.net/linux-kernel/2020/07/29/234	Mailing List Patch Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/07/28/2	Exploit Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:5.8.0:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.8.0:rc2::::::
	cpe:2.3:o:linux:linux_kernel:5.8.0:rc3::::::
	cpe:2.3:o:linux:linux_kernel:5.8.0:rc4::::::
	cpe:2.3:o:linux:linux_kernel:5.8.0:rc5::::::
	cpe:2.3:o:linux:linux_kernel:5.8.0:rc6::::::

Configuration 2 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*

Information

Published : 2020-09-15 12:15

Updated : 2023-02-12 15:40

NVD link : CVE-2020-14331

Mitre link : CVE-2020-14331

JSON object : View

CWE

CWE-787

Out-of-bounds Write

Products Affected

redhat

enterprise_linux

linux

linux_kernel

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6.6 /10