CVE-2021-28693

xen/arm: Boot modules are not scrubbed The bootloader will load boot modules (e.g. kernel, initramfs...) in a temporary area before they are copied by Xen to each domain memory. To ensure sensitive data is not leaked from the modules, Xen must "scrub" them before handing the page over to the allocator. Unfortunately, it was discovered that modules will not be scrubbed on Arm.

CVSS v3 5.5 MEDIUM
CVSS v2.0 2.1 LOW

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

2.1^/10

CVSS v2.0 : LOW

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

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://security.gentoo.org/glsa/202107-30	Third Party Advisory
https://xenbits.xenproject.org/xsa/advisory-372.txt	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:xen:xen::::::::
	cpe:2.3:o:xen:xen:4.15.0:rc1::::::

History

No history.

Information

Published : 2021-06-30 11:15

Updated : 2021-09-21 16:14

NVD link : CVE-2021-28693

Mitre link : CVE-2021-28693

CVE.ORG link : CVE-2021-28693

JSON object : View

Products Affected

xen

xen

CWE

NVD-CWE-noinfo

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