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nvd[email protected]NVD:CVE-2022-28737
HistoryJul 20, 2023 - 1:15 a.m.

CVE-2022-28737

2023-07-2001:15:10
CWE-787
web.nvd.nist.gov
7
possible overflow
handle_image
crafted efi executables
out-of-bound writes
arbitrary code execution

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

AI Score

7.4

Confidence

High

EPSS

0.001

Percentile

29.2%

There’s a possible overflow in handle_image() when shim tries to load and execute crafted EFI executables; The handle_image() function takes into account the SizeOfRawData field from each section to be loaded. An attacker can leverage this to perform out-of-bound writes into memory. Arbitrary code execution is not discarded in such scenario.

Affected configurations

Nvd
Node
redhatshimRange<15.6

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

AI Score

7.4

Confidence

High

EPSS

0.001

Percentile

29.2%