Vulnerability CVE-2021-29657

Vulnerability Name:

CVE-2021-29657 (CCN-204712)

Assigned:

2021-06-30

Published:

2021-06-30

Updated:

2023-05-19

Summary:

CVSS v3 Severity:

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

7.1 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N)
6.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/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): None

CVSS v2 Severity:

6.9 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C)

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

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

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

Vulnerability Consequences:

Bypass Security

References:

Source: MITRE
Type: CNA
CVE-2021-29657

Source: cve@mitre.org
Type: Third Party Advisory, VDB Entry
cve@mitre.org

Source: cve@mitre.org
Type: Exploit, Mailing List, Patch, Third Party Advisory
cve@mitre.org

Source: cve@mitre.org
Type: Exploit, Patch, Vendor Advisory
cve@mitre.org

Source: XF
Type: UNKNOWN
linux-kernel-cve202129657-sec-bypass(204712)

Source: CCN
Type: Linux Kernel GIT Repository
KVM: SVM: load control fields from VMCB12 before checking them

Source: cve@mitre.org
Type: Patch, Third Party Advisory
cve@mitre.org

Source: CCN
Type: Packet Storm Security [06-30-2021]
KVM nested_svm_vmrun Double Fetch

Source: cve@mitre.org
Type: Third Party Advisory
cve@mitre.org

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2021-29657

Vulnerable Configuration:

Configuration CCN 1:

cpe:/o:linux:linux_kernel:5.10:-:*:*:*:*:*:*

OR cpe:/o:linux:linux_kernel:5.11:-:*:*:*:*:*:*

OR cpe:/o:linux:linux_kernel:5.11.11:*:*:*:*:*:*:*

Denotes that component is vulnerable

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