Common Weakness Enumeration

CWE-190

Allowed

Integer Overflow or Wraparound

Abstraction: Base · Status: Stable

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

1472 vulnerabilities reference this CWE, most recent first.

CVE-2013-2807 (GCVE-0-2013-2807)

Vulnerability from cvelistv5 – Published: 2019-03-26 16:35 – Updated: 2024-08-06 15:52

Summary

Rockwell Automation RSLinx Enterprise Software (LogReceiver.exe) CPR9, CPR9-SR1, CPR9-SR2, CPR9-SR3, CPR9-SR4, CPR9-SR5, CPR9-SR5.1, and CPR9-SR6 does not handle input correctly and results in a logic error if it calculates an incorrect value for the “Total Record Size” field. By sending a datagram to the service over Port 4444/UDP with the “Record Data Size” field modified to a specifically oversized value, the service will calculate an undersized value for the “Total Record Size” that will cause an out-of-bounds read access violation that leads to a service crash. The service can be recovered with a manual reboot. The patches and details pertaining to these vulnerabilities can be found at the following Rockwell Automation Security Advisory link (login is required): https://rockwellautomation.custhelp.com/app/answers/detail/a_id/537599

Severity

No CVSS data available.

CWE

CWE-190 - Integer overflow CWE-190

Assigner

icscert CNA

References

1 reference

URL	Tags
https://ics-cert.us-cert.gov/advisories/ICSA-13-095-02	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Rockwell Automation	RSLinx Enterprise Software	Affected: CPR9 Affected: CPR9-SR1 Affected: CPR9-SR2 Affected: CPR9-SR3 Affected: CPR9-SR4 Affected: CPR9-SR5 Affected: CPR9-SR5.1 Affected: CPR9-SR6

Date Public

2013-10-07 00:00

Show details on NVD website

JSON

To clipboard

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CVE-2013-2806 (GCVE-0-2013-2806)

Vulnerability from cvelistv5 – Published: 2019-03-26 16:47 – Updated: 2024-08-06 15:52

Summary

Rockwell Automation RSLinx Enterprise Software (LogReceiver.exe) CPR9, CPR9-SR1, CPR9-SR2, CPR9-SR3, CPR9-SR4, CPR9-SR5, CPR9-SR5.1, and CPR9-SR6 does not handle input correctly and results in a logic error if it calculates an incorrect value for the “End of Current Record” field. By sending a datagram to the service over Port 4444/UDP with the “Record Data Size” field modified to a specifically oversized value, the service will calculate an undersized value for the “Total Record Size.” Then the service will calculate an incorrect value for the “End of Current Record” field causing access violations that lead to a service crash. The service can be recovered with a manual reboot. The patches and details pertaining to these vulnerabilities can be found at the following Rockwell Automation security advisory link (login is required): https://rockwellautomation.custhelp.com/app/answers/detail/a_id/537599

Severity

No CVSS data available.

CWE

CWE-190 - Integer overflow CWE-190

Assigner

icscert CNA

References

1 reference

URL	Tags
https://ics-cert.us-cert.gov/advisories/ICSA-13-095-02	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Rockwell Automation	RSLinx Enterprise Software	Affected: CPR9 Affected: CPR9-SR1 Affected: CPR9-SR2 Affected: CPR9-SR3 Affected: CPR9-SR4 Affected: CPR9-SR5 Affected: CPR9-SR5.1 Affected: CPR9-SR6

Date Public

2013-10-07 00:00

Show details on NVD website

JSON

To clipboard

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Mitigation

Requirements

Ensure that all protocols are strictly defined, such that all out-of-bounds behavior can be identified simply, and require strict conformance to the protocol.

Mitigation MIT-3

Requirements

Strategy: Language Selection

Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
If possible, choose a language or compiler that performs automatic bounds checking.

Mitigation MIT-4

Architecture and Design

Strategy: Libraries or Frameworks

Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
Use libraries or frameworks that make it easier to handle numbers without unexpected consequences.
Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++). [REF-106]

Mitigation MIT-8

Implementation

Strategy: Input Validation

Perform input validation on any numeric input by ensuring that it is within the expected range. Enforce that the input meets both the minimum and maximum requirements for the expected range.
Use unsigned integers where possible. This makes it easier to perform validation for integer overflows. When signed integers are required, ensure that the range check includes minimum values as well as maximum values.

Mitigation MIT-36

Implementation

Understand the programming language's underlying representation and how it interacts with numeric calculation (CWE-681). Pay close attention to byte size discrepancies, precision, signed/unsigned distinctions, truncation, conversion and casting between types, "not-a-number" calculations, and how the language handles numbers that are too large or too small for its underlying representation. [REF-7]
Also be careful to account for 32-bit, 64-bit, and other potential differences that may affect the numeric representation.

Mitigation MIT-15

Architecture and Design

For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.

Mitigation MIT-26

Implementation

Strategy: Compilation or Build Hardening

Examine compiler warnings closely and eliminate problems with potential security implications, such as signed / unsigned mismatch in memory operations, or use of uninitialized variables. Even if the weakness is rarely exploitable, a single failure may lead to the compromise of the entire system.

CAPEC-92: Forced Integer Overflow

This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.

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