Vulnerability CVE-2021-33655

Vulnerability Name:

CVE-2021-33655 (CCN-231424)

Assigned:

2021-05-28

Published:

2022-07-08

Updated:

2022-10-29

Summary:

When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.

CVSS v3 Severity:

6.7 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
5.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): High User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

6.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H)
5.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): High User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): Low Integrity (I): High Availibility (A): High

CVSS v2 Severity:

6.4 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:P/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Partial Integrity (I): Complete Availibility (A): Complete

Vulnerability Type:

CWE-787

Vulnerability Consequences:

Gain Access

References:

Source: MITRE
Type: CNA
CVE-2021-33655

Source: MLIST
Type: Mailing List, Patch, Third Party Advisory
[oss-security] 20220719 CVE-2021-33655: Linux kernel: When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.(5.18 5.19.0-rc1)

Source: XF
Type: UNKNOWN
linux-kernel-cve202133655-code-exec(231424)

Source: CCN
Type: Linux Kernel GIT Repository
Merge tag for-5.19/fbdev-3 of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev

Source: MISC
Type: Mailing List, Patch, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=086ff84617185393a0bbf25830c4f36412a7d3f4

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20221002 [SECURITY] [DLA 3131-1] linux security update

Source: DEBIAN
Type: Third Party Advisory
DSA-5191

Source: CCN
Type: IBM Security Bulletin 7007837 (Cloud Pak for Watson AIOps)
Multiple Vulnerabilities in CloudPak for Watson AIOPs

Source: CCN
Type: IBM Security Bulletin 7011323 (Spectrum Copy Data Management)
Vulnerabilities in Linux Kernel might affect IBM Spectrum Copy Data Management

Vulnerable Configuration:

Configuration 1:

cpe:/o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*

OR cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version < 5.19)

OR cpe:/o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*

OR cpe:/o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*

OR cpe:/o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:*

OR cpe:/o:linux:linux_kernel:5.19:rc5:*:*:*:*:*:*

Configuration 2:

cpe:/o:debian:debian_linux:10.0:*:*:*:*:*:*:*

OR cpe:/o:debian:debian_linux:11.0:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/o:linux:linux_kernel:-:*:*:*:*:*:*:*

AND

cpe:/a:ibm:spectrum_copy_data_management:2.2.0.0:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:8029	P	kernel-docs-5.14.21-150500.53.2 on GA media (Moderate)	2023-06-20
oval:org.opensuse.security:def:8090	P	reiserfs-kmp-default-5.14.21-150500.53.2 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:7539	P	kernel-64kb-5.14.21-150500.53.2 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:4739	P	Security update for the Linux Kernel (Important)	2022-08-26
oval:org.opensuse.security:def:707	P	Security update for the Linux Kernel (Important)	2022-08-23
oval:org.opensuse.security:def:697	P	Security update for the Linux Kernel (Important)	2022-08-16
oval:org.opensuse.security:def:125119	P	Security update for the Linux Kernel (Important)	2022-08-15
oval:org.opensuse.security:def:118235	P	Security update for the Linux Kernel (Important)	2022-08-15
oval:org.opensuse.security:def:127340	P	Security update for the Linux Kernel (Important)	2022-08-15
oval:org.opensuse.security:def:119287	P	Security update for the Linux Kernel (Important)	2022-08-15
oval:org.opensuse.security:def:125388	P	Security update for the Linux Kernel (Important)	2022-08-15
oval:org.opensuse.security:def:118655	P	Security update for the Linux Kernel (Important)	2022-08-15
oval:org.opensuse.security:def:119468	P	Security update for the Linux Kernel (Important)	2022-08-15
oval:org.opensuse.security:def:125778	P	Security update for the Linux Kernel (Important)	2022-08-15
oval:org.opensuse.security:def:118792	P	Security update for the Linux Kernel (Important)	2022-08-15
oval:org.opensuse.security:def:119653	P	Security update for the Linux Kernel (Important)	2022-08-15
oval:org.opensuse.security:def:126942	P	Security update for the Linux Kernel (Important)	2022-08-15
oval:org.opensuse.security:def:118982	P	Security update for the Linux Kernel (Important)	2022-08-15
oval:org.opensuse.security:def:692	P	Security update for the Linux Kernel (Important)	2022-08-12
oval:org.opensuse.security:def:4302	P	Security update for the Linux Kernel (Important)	2022-08-09
oval:org.opensuse.security:def:6135	P	Security update for the Linux Kernel (Important)	2022-08-09
oval:org.opensuse.security:def:4665	P	Security update for the Linux Kernel (Important)	2022-08-09
oval:org.opensuse.security:def:687	P	Security update for the Linux Kernel (Important)	2022-08-09
oval:org.opensuse.security:def:6136	P	Security update for the Linux Kernel (Important)	2022-08-09
oval:org.opensuse.security:def:6350	P	Security update for the Linux Kernel (Important)	2022-08-09
oval:org.opensuse.security:def:5322	P	Security update for the Linux Kernel (Important)	2022-08-09

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