CVE-2020-5204 Buffer overflow vulnerability in uftpd

2020-01-0619:10:12

CWE-121

GitHub_M

www.cve.org

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

9 High

AI Score

Confidence

High

0.166 Low

EPSS

Percentile

96.1%

JSON

In uftpd before 2.11, there is a buffer overflow vulnerability in handle_PORT in ftpcmd.c that is caused by a buffer that is 16 bytes large being filled via sprintf() with user input based on the format specifier string %d.%d.%d.%d. The 16 byte size is correct for valid IPv4 addresses (len('255.255.255.255') == 16), but the format specifier %d allows more than 3 digits. This has been fixed in version 2.11

CNA Affected

[
  {
    "product": "uftpd",
    "vendor": "troglobit",
    "versions": [
      {
        "status": "affected",
        "version": "< 2.11"
      }
    ]
  }
]