CVE-2024-6563 Buffer Overflow Arbitrary Write

2024-07-0815:09:51

CWE-120

CWE-123

ASRG

www.cve.org

buffer overflow

renesas firmware

arbitrary write

code execution

vulnerability

CVSS3

7.5

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

Percentile

9.2%

JSON

Buffer Copy without Checking Size of Input (‘Classic Buffer Overflow’) vulnerability in Renesas arm-trusted-firmware allows Local Execution of Code. This vulnerability is associated with program files https://github.Com/renesas-rcar/arm-trusted-firmware/blob/rcar_gen3_v2.5/drivers/renesas/common/io/i… https://github.Com/renesas-rcar/arm-trusted-firmware/blob/rcar_gen3_v2.5/drivers/renesas/common/io/io_rcar.C .

In line 313 “addr_loaded_cnt” is checked not to be “CHECK_IMAGE_AREA_CNT” (5) or larger, this check does not halt the function. Immediately after (line 317) there will be an overflow in the buffer and the value of “dst” will be written to the area immediately after the buffer, which is “addr_loaded_cnt”. This will allow an attacker to freely control the value of “addr_loaded_cnt” and thus control the destination of the write immediately after (line 318). The write in line 318 will then be fully controlled by said attacker, with whichever address and whichever value (“len”) they desire.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "packageName": "arm-trusted-firmware",
    "product": "rcar_gen3_v2.5",
    "programFiles": [
      "https://github.com/renesas-rcar/arm-trusted-firmware/blob/rcar_gen3_v2.5/drivers/renesas/common/io/io_rcar.c"
    ],
    "repo": "https://github.com/renesas-rcar/arm-trusted-firmware/",
    "vendor": "Renesas",
    "versions": [
      {
        "lessThanOrEqual": "c9fb3558410032d2660c7f3b7d4b87dec09fe2f2",
        "status": "affected",
        "version": "c2f286820471ed276c57e603762bd831873e5a17",
        "versionType": "git"
      }
    ]
  }
]