Detections
Analytics
Siemens SCALANCE X-200RNA Switch Devices Concurrent Execution Using Shared Resource with Improper Synchronization (CVE-2018-15473)
medium Tenable OT Security Plugin ID 500839
Synopsis
The remote OT asset is affected by a vulnerability.Description
OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c.- OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c. (CVE-2018-15473)
This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information.
Solution
The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.Siemens released updates for the affected product and recommends updating to the latest version:
- Update to V3.2.7 or later version.
Siemens identified the following specific workarounds and mitigations customers can apply to reduce the risk:
- Restrict access to the affected systems, especially to ports 22/tcp and 443/tcp to trusted IP addresses only.
- Deactivate the webserver if not required, and if deactivation is supported by the product.
As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens' operational guidelines for industrial security and following the recommendations in the product manuals.
Siemens provides additional information on industrial security.
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact Siemens.
For more information, see the associated Siemens security advisory SSA-412672 in HTML and CSAF.
See Also
https://access.redhat.com/errata/RHSA-2019:0711
https://access.redhat.com/errata/RHSA-2019:2143
https://usn.ubuntu.com/3809-1/
https://lists.debian.org/debian-lts-announce/2018/08/msg00022.html
http://www.openwall.com/lists/oss-security/2018/08/15/5
https://bugs.debian.org/906236
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0011
https://security.netapp.com/advisory/ntap-20181101-0001/
https://www.debian.org/security/2018/dsa-4280
https://security.gentoo.org/glsa/201810-03
https://www.oracle.com/security-alerts/cpujan2020.html
http://www.securitytracker.com/id/1041487
https://www.exploit-db.com/exploits/45233/
https://www.exploit-db.com/exploits/45210/
http://www.securityfocus.com/bid/105140
https://www.exploit-db.com/exploits/45939/
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
http://www.nessus.org/u?d1488d7c
https://www.cisa.gov/news-events/ics-advisories/icsa-22-349-21
Plugin Details
Severity: Medium
ID: 500839
Version: 1.5
Type: remote
Family: Tenable.ot
Published: 2/23/2023
Updated: 4/22/2024
Supported Sensors: Tenable OT Security
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 4.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS Score Source: CVE-2018-15473
CVSS v3
Risk Factor: Medium
Base Score: 5.3
Temporal Score: 5.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:siemens:scalance_x204rna_firmware
Required KB Items: Tenable.ot/Siemens
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 8/17/2018
Vulnerability Publication Date: 8/17/2018
Exploitable With
CANVAS (CANVAS)
Reference Information
CVE: CVE-2018-15473