Insufficient sanitization of environment variables passed to rsync can bypass the restrictions imposed by rssh, a restricted shell that should restrict users to perform only rsync operations, resulting in the execution of arbitrary shell commands.

Insufficient sanitization of environment variables passed to rsync can bypass the restrictions imposed by rssh, a restricted shell that should restrict users to perform only rsync operations, resulting in the execution of arbitrary shell commands.

The affected products use multiple sets of hard-coded credentials. If discovered, they can be used to read files on the device.CVE-2019-13543 has been assigned to this vulnerability. A CVSS v3 base score of 5.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N). The affected products use the descrypt algorithm for OS password hashing. While interactive, network-based logons are disabled, and attackers can use the other vulnerabilities within this report to obtain local shell access and access these hashes.CVE-2019-13539 has been assigned to this vulnerability. A CVSS v3 base score of 7.0 has been calculated; the CVSS vector string is (AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H). The affected products use a vulnerable version of the rssh utility in order to facilitate file uploads. This could provide an attacker with administrative access to files or the ability to execute arbitrary code.CVE-2019-3464, and CVE-2019-3463 have been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Affected: Ubuntu:14.04:LTS: rssh, Ubuntu:16.04:LTS: rssh, Ubuntu:18.04:LTS: rssh

Insufficient sanitization of environment variables passed to rsync can bypass the restrictions imposed by rssh, a restricted shell that should restrict users to perform only rsync operations, resulting in the execution of arbitrary shell commands.