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VulDBVULNRICHMENT:CVE-2024-8947

HistorySep 17, 2024 - 6:31 p.m.

CVE-2024-8947 MicroPython objarray.c use after free

2024-09-1718:31:06

CWE-416

VulDB

github.com

micropython 1.22.2

critical

objarray.c

use after free

remote attack

high complexity

difficult exploitation

version 1.23.0

patch identifier 4bed614e707c0644c06e117f848fa12605c711cd

component upgrade

bytes object.

CVSS2

5.1

Attack Vector

NETWORK

Attack Complexity

HIGH

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:H/Au:N/C:P/I:P/A:P

CVSS3

5.6

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

CVSS4

6.3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/SC:N/VI:L/SI:N/VA:L/SA:N

EPSS

0.001

Percentile

48.2%

SSVC

Exploitation

poc

Automatable

Technical Impact

partial

JSON

A vulnerability was found in MicroPython 1.22.2. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file py/objarray.c. The manipulation leads to use after free. The attack can be launched remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. Upgrading to version 1.23.0 is able to address this issue. The identifier of the patch is 4bed614e707c0644c06e117f848fa12605c711cd. It is recommended to upgrade the affected component. In micropython objarray component, when a bytes object is resized and copied into itself, it may reference memory that has already been freed.

ADP Affected

[
  {
    "cpes": [
      "cpe:2.3:a:micropython:micropython:*:*:*:*:*:*:*:*"
    ],
    "vendor": "micropython",
    "product": "micropython",
    "versions": [
      {
        "status": "affected",
        "version": "1.22.2"
      }
    ],
    "defaultStatus": "unknown"
  }
]

References

github.com/micropython/micropython/commit/4bed614e707c0644c06e117f848fa12605c711cd

github.com/micropython/micropython/issues/13283

github.com/micropython/micropython/issues/13283#issuecomment-1918479709

github.com/micropython/micropython/releases/tag/v1.23.0

vuldb.com/?ctiid.277765

vuldb.com/?id.277765

vuldb.com/?submit.409316

CVSS2

5.1

Attack Vector

NETWORK

Attack Complexity

HIGH

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:H/Au:N/C:P/I:P/A:P

CVSS3

5.6

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

CVSS4

6.3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/SC:N/VI:L/SI:N/VA:L/SA:N

EPSS

0.001

Percentile

48.2%

SSVC

Exploitation

poc

Automatable

Technical Impact

partial

JSON

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