CWE-1323 Base Draft

Improper Management of Sensitive Trace Data

This vulnerability occurs when sensitive trace data from a System-on-Chip (SoC), such as information from CPUs or cryptographic modules, is stored in unsecured memory or transmitted to unauthorized…

Definition

What is CWE-1323?

This vulnerability occurs when sensitive trace data from a System-on-Chip (SoC), such as information from CPUs or cryptographic modules, is stored in unsecured memory or transmitted to unauthorized debuggers, potentially exposing confidential information.
Modern System-on-Chip (SoC) designs incorporate specialized tracing hardware to monitor internal signals in real-time. This capability is essential for debugging and validating complex hardware and software interactions. However, these traces often capture highly sensitive data from security-critical components like cryptographic engines and processor cores. If this collected trace data isn't properly secured—either by storing it in unprotected memory or failing to tag it with security metadata—it becomes accessible to unauthorized agents. An untrusted software debugger could read unprotected memory to extract secrets, while a hardware debugger might access improperly tagged traces, leading to the exposure of confidential information and system compromise.
Real-world impact

Real-world CVEs caused by CWE-1323

No public CVE references are linked to this CWE in MITRE's catalog yet.

How attackers exploit it

Step-by-step attacker path

  1. 1

    Identify a code path that handles untrusted input without validation.

  2. 2

    Craft a payload that exercises the unsafe behavior — injection, traversal, overflow, or logic abuse.

  3. 3

    Deliver the payload through a normal request and observe the application's reaction.

  4. 4

    Iterate until the response leaks data, executes attacker code, or escalates privileges.

Vulnerable code example

Vulnerable Other

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.

Vulnerable Other 
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).
Secure code example

Secure Other

Secure Other 
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.
What changed: the unsafe sink is replaced (or the input is validated/escaped) so the same payload no longer triggers the weakness.
Prevention checklist

How to prevent CWE-1323

  • Implementation Tag traces to indicate owner and debugging privilege level (designer, OEM, or end user) needed to access that trace.
Detection signals

How to detect CWE-1323

SAST High

Run static analysis (SAST) on the codebase looking for the unsafe pattern in the data flow.

DAST Moderate

Run dynamic application security testing against the live endpoint.

Runtime Moderate

Watch runtime logs for unusual exception traces, malformed input, or authorization bypass attempts.

Code review Moderate

Code review: flag any new code that handles input from this surface without using the validated framework helpers.

Plexicus auto-fix

Plexicus auto-detects CWE-1323 and opens a fix PR in under 60 seconds.

Codex Remedium scans every commit, identifies this exact weakness, and ships a reviewer-ready pull request with the patch. No tickets. No hand-offs.

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Frequently asked questions

Frequently asked questions

What is CWE-1323?

This vulnerability occurs when sensitive trace data from a System-on-Chip (SoC), such as information from CPUs or cryptographic modules, is stored in unsecured memory or transmitted to unauthorized debuggers, potentially exposing confidential information.

How serious is CWE-1323?

MITRE has not published a likelihood-of-exploit rating for this weakness. Treat it as medium-impact until your threat model proves otherwise.

What languages or platforms are affected by CWE-1323?

MITRE lists the following affected platforms: Not OS-Specific, Not Architecture-Specific, System on Chip.

How can I prevent CWE-1323?

Tag traces to indicate owner and debugging privilege level (designer, OEM, or end user) needed to access that trace.

How does Plexicus detect and fix CWE-1323?

Plexicus's SAST engine matches the data-flow signature for CWE-1323 on every commit. When a match is found, our Codex Remedium agent opens a fix PR with the corrected code, tests, and a one-line summary for the reviewer.

Where can I learn more about CWE-1323?

MITRE publishes the canonical definition at https://cwe.mitre.org/data/definitions/1323.html. You can also reference OWASP and NIST documentation for adjacent guidance.

Related weaknesses

Weaknesses related to CWE-1323

CWE-284 Parent

Improper Access Control

The software fails to properly limit who can access a resource, allowing unauthorized users or systems to interact with it.

CWE-1191 Sibling

On-Chip Debug and Test Interface With Improper Access Control

This vulnerability occurs when a hardware chip's debug or test interface (like JTAG) lacks proper access controls. Without correct…

CWE-1220 Sibling

Insufficient Granularity of Access Control

This vulnerability occurs when a system's access controls are too broad, allowing unauthorized users or processes to read or modify…

CWE-1224 Sibling

Improper Restriction of Write-Once Bit Fields

This vulnerability occurs when hardware write-once protection mechanisms, often called 'sticky bits,' are incorrectly implemented,…

CWE-1231 Sibling

Improper Prevention of Lock Bit Modification

This vulnerability occurs when hardware or firmware uses a lock bit to protect critical system registers or memory regions, but fails to…

CWE-1233 Sibling

Security-Sensitive Hardware Controls with Missing Lock Bit Protection

This vulnerability occurs when a hardware device uses a lock bit to protect critical configuration registers, but the lock fails to…

CWE-1252 Sibling

CPU Hardware Not Configured to Support Exclusivity of Write and Execute Operations

This vulnerability occurs when a CPU's hardware is not set up to enforce a strict separation between writing data to memory and executing…

CWE-1257 Sibling

Improper Access Control Applied to Mirrored or Aliased Memory Regions

This vulnerability occurs when a hardware design maps the same physical memory to multiple addresses (aliasing or mirroring) but fails to…

CWE-1259 Sibling

Improper Restriction of Security Token Assignment

This vulnerability occurs when a System-on-a-Chip (SoC) fails to properly secure its Security Token mechanism. These tokens control which…

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