CVE-2024-7538 oFono CUSD AT Command Stack-based Buffer Overflow Code Execution Vulnerability

2024-08-0523:53:40

CWE-121

zdi

github.com

ofono

cusd

stack-based buffer overflow

code execution

vulnerability

at commands

zdi-can-23190

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

7.6

Confidence

High

EPSS

0.001

Percentile

21.9%

SSVC

Exploitation

none

Automatable

Technical Impact

total

JSON

oFono CUSD AT Command Stack-based Buffer Overflow Code Execution Vulnerability. This vulnerability allows local attackers to execute arbitrary code on affected installations of oFono. An attacker must first obtain the ability to execute code on the target modem in order to exploit this vulnerability.

The specific flaw exists within the parsing of responses from AT Commands. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-23190.

CNA Affected

[
  {
    "vendor": "oFono",
    "product": "oFono",
    "versions": [
      {
        "status": "affected",
        "version": "1.34"
      }
    ],
    "defaultStatus": "unknown"
  }
]

ADP Affected

[
  {
    "cpes": [
      "cpe:2.3:a:ofono:ofono:1.34:*:*:*:*:*:*:*"
    ],
    "vendor": "ofono",
    "product": "ofono",
    "versions": [
      {
        "status": "affected",
        "version": "1.34"
      }
    ],
    "defaultStatus": "unknown"
  }
]