Detections
Analytics
Siemens SCALANCE X-200RNA Switch Devices Path Traversal (CVE-2019-6111)
medium Tenable OT Security Plugin ID 500898
Synopsis
The remote OT asset is affected by a vulnerability.Description
An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the scp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp client target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example, to overwrite the .ssh/authorized_keys file).- An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the scp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp client target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example, to overwrite the .ssh/authorized_keys file). (CVE-2019-6111)
This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information.
Solution
Refer to the vendor advisory.See Also
https://usn.ubuntu.com/3885-1/
https://usn.ubuntu.com/3885-2/
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html
https://security.gentoo.org/glsa/201903-16
https://www.debian.org/security/2019/dsa-4387
https://bugzilla.redhat.com/show_bug.cgi?id=1677794
https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c
https://security.netapp.com/advisory/ntap-20190213-0001/
http://www.nessus.org/u?b370bc74
https://access.redhat.com/errata/RHSA-2019:3702
http://www.openwall.com/lists/oss-security/2022/08/02/1
https://www.exploit-db.com/exploits/46193/
http://www.openwall.com/lists/oss-security/2019/04/18/1
https://www.freebsd.org/security/advisories/FreeBSD-EN-19:10.scp.asc
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
http://www.nessus.org/u?e31ba540
http://www.nessus.org/u?3636e0a7
http://www.nessus.org/u?4d26567d
Plugin Details
Severity: Medium
ID: 500898
Version: 1.5
Type: remote
Family: Tenable.ot
Published: 3/24/2023
Updated: 1/4/2024
Supported Sensors: Tenable OT Security
Risk Information
VPR
Risk Factor: Medium
Score: 5.1
CVSS v2
Risk Factor: Medium
Base Score: 5.8
Temporal Score: 4.5
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P
CVSS Score Source: CVE-2019-6111
CVSS v3
Risk Factor: Medium
Base Score: 5.9
Temporal Score: 5.3
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:siemens:scalance_x204rna_firmware, cpe:/o:siemens:scalance_x204rna_eec_firmware
Required KB Items: Tenable.ot/Siemens
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 1/31/2019
Vulnerability Publication Date: 1/31/2019
Reference Information
CVE: CVE-2019-6111
CWE: 22
DSA: DSA-4387
FEDORA: FEDORA-2019-0f4190cdb0
FREEBSD: FreeBSD-EN-19:10
GLSA: GLSA-201903-16
RHSA: RHSA-2019:3702
SuSE: openSUSE-SU-2019:1602
USN: USN-3885-1, USN-3885-2