FTP Service AUTH TLS Plaintext Command Injection

medium Nessus Plugin ID 53847

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Synopsis

The remote FTP server allows plaintext command injection while negotiating an encrypted communications channel.

Description

The remote FTP server contains a software flaw in its AUTH TLS implementation that could allow a remote, unauthenticated attacker to inject commands during the plaintext protocol phase that will be executed during the ciphertext protocol phase.

Successful exploitation could permit an attacker to modify files on the FTP server and reveal a user's credentials.

Solution

Contact the vendor to see if an update is available.

See Also

https://tools.ietf.org/html/rfc4217

https://www.securityfocus.com/archive/1/516901/30/0/threaded

Plugin Details

Severity: Medium

ID: 53847

File Name: ftp_starttls_plaintext_injection.nasl

Version: 1.15

Type: remote

Family: FTP

Published: 5/9/2011

Updated: 2/24/2021

Dependencies: ftp_starttls.nasl

Risk Information

CVSS Score Source: CVE-2011-1575

VPR

Risk Factor: Low

Score: 2.5

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 3/7/2011

Reference Information

CVE: CVE-2011-1575

BID: 46767

CERT: 555316