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FreeBSD: VID-6D334FDB-F7E7-11EA-88F8-901B0EF719AB (CVE-2020-7468): FreeBSD -- ftpd privilege escalation via ftpchroot feature

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FreeBSD: VID-6D334FDB-F7E7-11EA-88F8-901B0EF719AB (CVE-2020-7468): FreeBSD -- ftpd privilege escalation via ftpchroot feature

Severity
9
CVSS
(AV:N/AC:L/Au:S/C:C/I:C/A:C)
Published
09/15/2020
Created
09/19/2020
Added
09/17/2020
Modified
04/05/2021

Description

Details for this vulnerability have not been published by NIST at this point. Descriptions from software vendor advisories for this issue are provided below.

From VID-6D334FDB-F7E7-11EA-88F8-901B0EF719AB:

Problem Description:

A ftpd(8) bug in the implementation of the file system sandbox, combined

with capabilities available to an authenticated FTP user, can be used to

escape the file system restriction configured in ftpchroot(5).

Moreover, the bug allows a malicious client to gain root privileges.

Impact:

A malicious FTP user can gain privileged access to an affected system.

Solution(s)

  • freebsd-upgrade-base-11_3-release-p14
  • freebsd-upgrade-base-11_4-release-p4
  • freebsd-upgrade-base-12_1-release-p10

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