CVE-2023-28102 Command injection in discordrb

2023-03-2721:23:29

CWE-78

GitHub_M

www.cve.org

cve-2023-28102

discordrb implementation

ruby

command injection

encoder.rb

vulnerability

shell commands

user input

ghsl-2022-094

8.3 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

48.0%

JSON

discordrb is an implementation of the Discord API using Ruby. In discordrb before commit 91e13043ffa the encoder.rb file unsafely constructs a shell string using the file parameter, which can potentially leave clients of discordrb vulnerable to command injection. The library is not directly exploitable: the exploit requires that some client of the library calls the vulnerable method with user input. However, if unsafe input reaches the library method, then an attacker can execute arbitrary shell commands on the host machine. Full impact will depend on the permissions of the process running the discordrb library and will likely not be total system access. This issue has been addressed in code, but a new release of the discordrb gem has not been uploaded to rubygems. This issue is also tracked as GHSL-2022-094.

CNA Affected

[
  {
    "vendor": "shardlab",
    "product": "discordrb",
    "versions": [
      {
        "version": "<= 3.4.1",
        "status": "affected"
      }
    ]
  }
]