Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP

Summary

Multiple vulnerabilities have been identified in the additional GNU/Linux subsystem of the firmware version V3.1.7 for the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP (incl. SIPLUS variant). Siemens is preparing fixes and recommends specific mitigations for products where fixes are not or not yet available.

The following versions of Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP are affected:

SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) vers:intdot/>=3.1.7
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) vers:intdot/>=3.1.7
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) vers:intdot/>=3.1.7
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) vers:intdot/>=3.1.7
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) vers:intdot/>=3.1.7

CVSS	Vendor	Equipment
v3 10	Siemens	SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)

428 Vulnerabilities
Access of Resource Using Incompatible Type ('Type Confusion'), Access of Uninitialized Pointer, Active Debug Code, Buffer Access with Incorrect Length Value, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Buffer Underwrite ('Buffer Underflow'), Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'), Deadlock, Divide By Zero, Expired Pointer Dereference, Exposure of Sensitive Information Due to Incompatible Policies, Exposure of Sensitive Information in Shared Microarchitectural Structures during Transient Execution, Improper Enforcement of Behavioral Workflow, Improper Following of Specification by Caller, Improper Handling of Invalid Use of Special Elements, Improper Handling of Length Parameter Inconsistency, Improper Handling of Missing Special Element, Improper Handling of Structural Elements, Improper Input Validation, Improper Locking, Improper Neutralization of Null Byte or NUL Character, Improper Null Termination, Improper Privilege Management, Improper Resource Locking, Improper Resource Shutdown or Release, Improper Update of Reference Count, Improper Validation of Specified Index, Position, or Offset in Input, Improper Validation of Specified Quantity in Input, Improper Validation of Specified Type of Input, Improperly Implemented Security Check for Standard, Incomplete Cleanup, Incomplete Internal State Distinction, Incorrect Calculation of Buffer Size, Incorrect Conversion between Numeric Types, Incorrect Privilege Assignment, Incorrect Synchronization, Incorrect Type Conversion or Cast, Integer Overflow or Wraparound, Loop with Unreachable Exit Condition ('Infinite Loop'), Memory Allocation with Excessive Size Value, Misinterpretation of Input, Missing Critical Step in Authentication, Missing Default Case in Multiple Condition Expression, Missing Encryption of Sensitive Data, Missing Initialization of Resource, Missing Release of Memory after Effective Lifetime, Missing Release of Resource after Effective Lifetime, Missing Report of Error Condition, Missing Synchronization, Multiple Releases of Same Resource or Handle, NULL Pointer Dereference, Operation on a Resource after Expiration or Release, Out-of-bounds Read, Out-of-bounds Write, Plaintext Storage of a Password, Race Condition within a Thread, Reachable Assertion, Release of Invalid Pointer or Reference, Signal Handler Race Condition, Time-of-check Time-of-use (TOCTOU) Race Condition, Transmission of Private Resources into a New Sphere ('Resource Leak'), Trust of System Event Data, Unchecked Return Value, Uncontrolled Recursion, Untrusted Pointer Dereference, Use After Free, Use of Externally-Controlled Format String, Use of Uninitialized Resource, Use of Uninitialized Variable, Write-what-where Condition

428 Vulnerabilities

Access of Resource Using Incompatible Type ('Type Confusion'), Access of Uninitialized Pointer, Active Debug Code, Buffer Access with Incorrect Length Value, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Buffer Underwrite ('Buffer Underflow'), Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'), Deadlock, Divide By Zero, Expired Pointer Dereference, Exposure of Sensitive Information Due to Incompatible Policies, Exposure of Sensitive Information in Shared Microarchitectural Structures during Transient Execution, Improper Enforcement of Behavioral Workflow, Improper Following of Specification by Caller, Improper Handling of Invalid Use of Special Elements, Improper Handling of Length Parameter Inconsistency, Improper Handling of Missing Special Element, Improper Handling of Structural Elements, Improper Input Validation, Improper Locking, Improper Neutralization of Null Byte or NUL Character, Improper Null Termination, Improper Privilege Management, Improper Resource Locking, Improper Resource Shutdown or Release, Improper Update of Reference Count, Improper Validation of Specified Index, Position, or Offset in Input, Improper Validation of Specified Quantity in Input, Improper Validation of Specified Type of Input, Improperly Implemented Security Check for Standard, Incomplete Cleanup, Incomplete Internal State Distinction, Incorrect Calculation of Buffer Size, Incorrect Conversion between Numeric Types, Incorrect Privilege Assignment, Incorrect Synchronization, Incorrect Type Conversion or Cast, Integer Overflow or Wraparound, Loop with Unreachable Exit Condition ('Infinite Loop'), Memory Allocation with Excessive Size Value, Misinterpretation of Input, Missing Critical Step in Authentication, Missing Default Case in Multiple Condition Expression, Missing Encryption of Sensitive Data, Missing Initialization of Resource, Missing Release of Memory after Effective Lifetime, Missing Release of Resource after Effective Lifetime, Missing Report of Error Condition, Missing Synchronization, Multiple Releases of Same Resource or Handle, NULL Pointer Dereference, Operation on a Resource after Expiration or Release, Out-of-bounds Read, Out-of-bounds Write, Plaintext Storage of a Password, Race Condition within a Thread, Reachable Assertion, Release of Invalid Pointer or Reference, Signal Handler Race Condition, Time-of-check Time-of-use (TOCTOU) Race Condition, Transmission of Private Resources into a New Sphere ('Resource Leak'), Trust of System Event Data, Unchecked Return Value, Uncontrolled Recursion, Untrusted Pointer Dereference, Use After Free, Use of Externally-Controlled Format String, Use of Uninitialized Resource, Use of Uninitialized Variable, Write-what-where Condition

Background

Critical Infrastructure Sectors: Critical Manufacturing, Transportation Systems, Energy, Healthcare and Public Health, Financial Services, Government Services and Facilities
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Germany

Vulnerabilities

CVE-2021-41617

sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process, if the configuration specifies running the command as a different user.