Vulnerability CVE-2021-0707

Vulnerability Name:

CVE-2021-0707 (CCN-210720)

Assigned:

2020-11-06

Published:

2021-10-04

Updated:

2022-04-20

Summary:

In dma_buf_release of dma-buf.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-155756045References: Upstream kernel

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:

CWE-416

Vulnerability Consequences:

Gain Privileges

References:

Source: CCN
Type: Google Web site
Android

Source: MITRE
Type: CNA
CVE-2021-0707

Source: XF
Type: UNKNOWN
android-cve20210707-priv-esc(210720)

Source: CCN
Type: Android Open Source Project
Android Security Bulletin-October 2021

Source: MISC
Type: Patch, Vendor Advisory
https://source.android.com/security/bulletin/2022-04-01

Vulnerable Configuration:

Configuration 1:

cpe:/o:google:android:-:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/o:google:android:-:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:89	P	kernel-64kb-5.3.18-57.3 on GA media (Moderate)	2022-06-13
oval:org.opensuse.security:def:481	P	Security update for the Linux Kernel (Important)	2022-05-16
oval:org.opensuse.security:def:1750	P	Security update for the Linux Kernel (Important)	2022-05-16
oval:org.opensuse.security:def:42284	P	Security update for the Linux Kernel (Important)	2022-05-16
oval:org.opensuse.security:def:1350	P	Security update for the Linux Kernel (Important)	2022-05-16
oval:org.opensuse.security:def:1760	P	Security update for the Linux Kernel (Important)	2022-05-16
oval:org.opensuse.security:def:890	P	Security update for the Linux Kernel (Important)	2022-05-16
oval:org.opensuse.security:def:42381	P	Security update for the Linux Kernel (Important)	2022-05-16
oval:org.opensuse.security:def:1559	P	Security update for the Linux Kernel (Important)	2022-05-16
oval:org.opensuse.security:def:1803	P	Security update for the Linux Kernel (Important)	2022-05-16
oval:org.opensuse.security:def:1168	P	Security update for the Linux Kernel (Important)	2022-05-16
oval:org.opensuse.security:def:42383	P	Security update for the Linux Kernel (Important)	2022-05-16
oval:org.opensuse.security:def:1596	P	Security update for the Linux Kernel (Important)	2022-05-16
oval:org.opensuse.security:def:42282	P	Security update for the Linux Kernel (Important)	2022-05-16
oval:org.opensuse.security:def:1234	P	Security update for the Linux Kernel (Important)	2022-05-16

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