CVE-2017-7418

Severity CVSS v4.0:

Pending analysis

Type:

CWE-59 Link Following

Publication date:

04/04/2017

Last modified:

13/05/2026

Description

ProFTPD before 1.3.5e and 1.3.6 before 1.3.6rc5 controls whether the home directory of a user could contain a symbolic link through the AllowChrootSymlinks configuration option, but checks only the last path component when enforcing AllowChrootSymlinks. Attackers with local access could bypass the AllowChrootSymlinks control by replacing a path component (other than the last one) with a symbolic link. The threat model includes an attacker who is not granted full filesystem access by a hosting provider, but can reconfigure the home directory of an FTP user.

Impact

Vector 3.x

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): High
Availability (A): None

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vector 2.0

AV:L/AC:L/Au:N/C:N/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 2.10 LOW
Vector: AV:L/AC:L/Au:N/C:N/I:P/A:N

Attack Vector (AV): Local
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): Physical
Availability (A): None

Base Score 2.0

2.10

Severity 2.0

LOW

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:proftpd:proftpd::d::::::*		1.3.5 (including)
cpe:2.3:a:proftpd:proftpd:1.3.6:::::::*
cpe:2.3:a:proftpd:proftpd:1.3.6:rc1::::::
cpe:2.3:a:proftpd:proftpd:1.3.6:rc2::::::
cpe:2.3:a:proftpd:proftpd:1.3.6:rc3::::::
cpe:2.3:a:proftpd:proftpd:1.3.6:rc4::::::

To consult the complete list of CPE names with products and versions, see this page

CPE	From	Up to
cpe:2.3:a:proftpd:proftpd::d::::::*		1.3.5 (including)
cpe:2.3:a:proftpd:proftpd:1.3.6:::::::*
cpe:2.3:a:proftpd:proftpd:1.3.6:rc1::::::
cpe:2.3:a:proftpd:proftpd:1.3.6:rc2::::::
cpe:2.3:a:proftpd:proftpd:1.3.6:rc3::::::
cpe:2.3:a:proftpd:proftpd:1.3.6:rc4::::::

CVE-2017-7418

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools