CWE-1323: Improper Management of Sensitive Trace Data

Extended Description

To facilitate verification of complex System-on-Chip (SoC) designs, SoC integrators add specific IP blocks that trace the SoC's internal signals in real-time. This infrastructure enables observability of the SoC's internal behavior, validation of its functional design, and detection of hardware and software bugs. Such tracing IP blocks collect traces from several sources on the SoC including the CPU, crypto coprocessors, and on-chip fabrics. Traces collected from these sources are then aggregated inside trace IP block and forwarded to trace sinks, such as debug-trace ports that facilitate debugging by external hardware and software debuggers. Since these traces are collected from several security-sensitive sources, they must be protected against untrusted debuggers. If they are stored in unprotected memory, an untrusted software debugger can access these traces and extract secret information. Additionally, if security-sensitive traces are not tagged as secure, an untrusted hardware debugger might access them to extract confidential information.

Code Examples & CVEs

Demonstrative Examples

In a SoC, traces generated from sources include security-sensitive IP blocks such as CPU (with tracing information such as instructions executed and memory operands), on-chip fabric (e.g., memory-transfer signals, transaction type and destination, and on-chip-firewall-error signals), power-management IP blocks (e.g., clock- and power-gating signals), and cryptographic coprocessors (e.g., cryptographic keys and intermediate values of crypto operations), among other non-security-sensitive IP blocks including timers and other functional blocks. The collected traces are then forwarded to the debug and trace interface used by the external hardware debugger.

BadOther

The traces do                         not have any privilege level attached to them. All                         collected traces can be viewed by any debugger (i.e., SoC                         designer, OEM debugger, or end user).

GoodOther

Some of the                         traces are SoC-design-house secrets, while some are OEM                         secrets. Few are end-user secrets and the rest are                         not security-sensitive. Tag all traces with the                         appropriate, privilege level at the source. The bits                         indicating the privilege level must be immutable in                         their transit from trace source to the final, trace                         sink. Debugger privilege level must be checked before                         providing access to traces.

Source-backed guidance

Additional facts reviewed against primary or authoritative security sources.

Verify controls for CWE-1323 with SSDF evidence

Use NIST SSDF verification and vulnerability-response practices to detect CWE-1323, Improper Management of Sensitive Trace Data, throughout the product lifecycle. Derive review questions, static or dynamic checks, and negative tests from the CWE's causal behavior; define the components and lifecycle stages each check covers; and retain findings with enough evidence to distinguish the root cause from symptoms and impacts. Track escapes and false negatives, then improve the verification plan after every confirmed occurrence.

NIST SP 800-218 Secure Software Development Framework — National Institute of Standards and Technology

Address Improper Management of Sensitive Trace Data during Implementation

MITRE associates mitigation with Implementation; recorded impacts include Read Memory; the entry maps to CAPEC-150, CAPEC-167, and CAPEC-545. Use these source-defined anchors to turn CWE-1323 into implementation, review, and verification checks for the affected component.

CWE-1323: Improper Management of Sensitive Trace Data — MITRE CWE

Triage CWE-1323 against known exploitation evidence

Use CISA's Known Exploited Vulnerabilities catalog to test whether a vulnerability mapped to CWE-1323, Improper Management of Sensitive Trace Data, has evidence of exploitation in the wild. Confirm the CVE-to-CWE root-cause mapping independently before attaching the example, then capture the affected product, required action, and remediation deadline. A missing KEV match is not evidence that the weakness is unexploited, and a KEV entry must not be generalized to every occurrence of this CWE.

Known Exploited Vulnerabilities Catalog — Cybersecurity and Infrastructure Security Agency

Apply precise root-cause mapping to CWE-1323

Apply MITRE's full root-cause mapping guidance when using CWE-1323, Improper Management of Sensitive Trace Data. Separate weakness language from attacker prerequisites and technical impact, check the entry's abstraction and vulnerability-mapping notes, and prefer the most specific Base or Variant supported by the evidence. Record the rejected alternatives and require an independent review before the mapping is used for remediation trends or program metrics.

CVE to CWE Root Cause Mapping Guidance — MITRE CWE

Validate CWE-1323 with root-cause mapping checks

Apply MITRE's root-cause mapping quick tips to CWE-1323, Improper Management of Sensitive Trace Data. Confirm the finding describes the causal weakness rather than an impact or attack pattern, compare the abstraction and mapping notes with plausible alternatives, and have a second reviewer challenge the selection. Preserve the evidence and reasoning so recurring defects can be measured against one consistent identifier.

CVE to CWE Root Cause Mapping Quick Tips — MITRE CWE

Frequently Asked Questions

What is CWE-1323: Improper Management of Sensitive Trace Data?+

CWE-1323: Improper Management of Sensitive Trace Data is a Common Weakness Enumeration (CWE) entry maintained by MITRE. Trace data collected from several sources on the System-on-Chip (SoC) is stored in unprotected locations or transported to untrusted agents. To facilitate verification of complex System-on-Chip (SoC) designs, SoC integrators add specific IP blocks that trace the SoC's internal signals in real-time. This infrastructure enables observability of the SoC's internal behavior, validation of its functional design, and detection of hardware and software bugs. Such tracing IP blocks collect traces from several sources on the SoC including the CPU, crypto coprocessors, and on-chip fabrics. Traces collected from these sources are then aggregated inside trace IP block and forwarded to trace sinks, such as debug-trace ports that facilitate debugging by external hardware and software debuggers. Since these traces are collected from several security-sensitive sources, they must be protected against untrusted debuggers. If they are stored in unprotected memory, an untrusted software debugger can access these traces and extract secret information. Additionally, if security-sensitive traces are not tagged as secure, an untrusted hardware debugger might access them to extract confidential information.

What are the security consequences of Improper Management of Sensitive Trace Data?+

If exploited, CWE-1323 (Improper Management of Sensitive Trace Data) it can compromise Confidentiality, leading to outcomes such as Read Memory.

How do you prevent or mitigate Improper Management of Sensitive Trace Data?+

Recommended mitigations for CWE-1323 include: Tag traces to indicate owner and debugging privilege level (designer, OEM, or end user) needed to access that trace.

Which programming languages are affected by Improper Management of Sensitive Trace Data?+

CWE-1323 commonly affects Not Language-Specific. Note that weaknesses are often language-agnostic patterns, so secure coding practices apply broadly.

What is the difference between a CWE and a CVE?+

A CWE (Common Weakness Enumeration) like CWE-1323 describes a category of software weakness — the underlying flaw type. A CVE (Common Vulnerabilities and Exposures) identifies a specific, real-world vulnerability in a particular product. In short, a CWE is the kind of mistake, and a CVE is an instance of that mistake being found in software.

CWE-1323: Improper Management of Sensitive Trace Data

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