SB2021041411 - Multiple vulnerabilities in Siemens LOGO Soft Comfort

Description

This security bulletin contains information about 2 vulnerabilities.

1) Path traversal (CVE-ID: CVE-2020-25243)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error while importing a compromised project file. A remote attacker can send a specially crafted HTTP request, leading to the execution of commands on the system.

2) Insecure DLL loading (CVE-ID: CVE-2020-25244)

CWE-ID: CWE-427 - Uncontrolled Search Path Element

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local attacker to compromise vulnerable system.

The vulnerability exists due to the application loads DLL libraries in an insecure manner. A local attacker can place a specially crafted .dll file and execute arbitrary code on victim's system.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• https://ics-cert.us-cert.gov/advisories/icsa-21-103-09
• https://cert-portal.siemens.com/productcert/pdf/ssa-983300.pdf