Vulnerability CVE-2021-0675 - CERT Civis.Net

Vulnerability Name:

CVE-2021-0675 (CCN-215678)

Assigned:

2020-11-06

Published:

2021-12-08

Updated:

2022-04-01

Summary:

In alac decoder, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS06064258; Issue ID: ALPS06064258.

CVSS v3 Severity:

7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/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): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

8.4 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
7.3 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/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): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

CVSS v2 Severity:

7.2 High (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

7.2 High (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

Vulnerability Type:

Vulnerability Consequences:

Gain Privileges

References:

Source: MITRE
Type: CNA
CVE-2021-0675

Source: CCN
Type: MediaTek Web site
December 2021 Product Security Bulletin

Source: MISC
Type: Third Party Advisory
https://corp.mediatek.com/product-security-bulletin/December-2021

Source: XF
Type: UNKNOWN
mediatek-cve20210675-priv-esc(215678)

Vulnerable Configuration:

Configuration 1:

cpe:/o:google:android:8.1:*:*:*:*:*:*:*

OR cpe:/o:google:android:9.0:*:*:*:*:*:*:*

OR cpe:/o:google:android:10.0:*:*:*:*:*:*:*

OR cpe:/o:google:android:11.0:*:*:*:*:*:*:*

AND

cpe:/h:mediatek:mt6570:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6580:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6735:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6737:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6739:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6750:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6750s:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6753:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6755:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6755s:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6757:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6757c:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6757cd:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6757ch:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6758:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6761:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6763:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6765:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6768:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6771:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6779:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6781:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6785:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6797:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6799:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6833:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6853:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6853t:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6873:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6877:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6883:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6885:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6889:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt6893:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8163:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8167:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8167s:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8168:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8173:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8175:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8176:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8183:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8185:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8195:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8321:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8362a:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8365:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8385:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8765:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8766:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8768:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8786:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8788:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8789:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8791:-:*:*:*:*:*:*:*

OR cpe:/h:mediatek:mt8797:-:*:*:*:*:*:*:*

Denotes that component is vulnerable