CVE-2020-11038 Integer Overflow to Buffer Overflow in FreeRDP

2020-05-2900:00:00

CWE-680

GitHub_M

www.cve.org

6.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

LOW

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

7.5 High

AI Score

Confidence

High

0.003 Low

EPSS

Percentile

70.0%

JSON

In FreeRDP less than or equal to 2.0.0, an Integer Overflow to Buffer Overflow exists. When using /video redirection, a manipulated server can instruct the client to allocate a buffer with a smaller size than requested due to an integer overflow in size calculation. With later messages, the server can manipulate the client to write data out of bound to the previously allocated buffer. This has been patched in 2.1.0.

CNA Affected

[
  {
    "vendor": "FreeRDP",
    "product": "FreeRDP",
    "versions": [
      {
        "version": "<= 2.0.0",
        "status": "affected"
      }
    ]
  }
]