Slackware Linux update for proftpd

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU20007

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7418

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to access sensitive information.

The vulnerability exists due to incorrect implementation of the AllowChrootSymlinks option that checks only the last path component when enforcing it. A local user with ability to manage own FTP home directory can create a specially crafted symbolic link and gain unauthorized access to the filesystem.

Mitigation

Update the affected package proftpd.

Vulnerable software versions

Slackware Linux: 13.0 - 14.2

External links

http://www.slackware.com/security/viewer.php?l=slackware-security&y=2017&m=slackware-security.545090

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.