Security Resilience

CVE-2023-39342

Freedom Dangerzone ≤ 0.4.2

Published
08 August 2023
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 3.6
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
EPSS Score 0.0027 18th percentile
Risk Priority 30 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-39342 is a low-severity Improper Neutralization of Escape, Meta, or Control Sequences (CWE-150) vulnerability in Freedom Dangerzone. Its CVSS base score is 3.6 (Low).

Operationally, exploitation aligns with the MITRE ATT&CK technique Junk Data (T1001.001); ranked at the 18th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

Dangerzone is software for converting potentially dangerous PDFs, office documents, or images to safe PDFs. The Dangerzone CLI (`dangerzone-cli` command) logs output from the container where the file sanitization takes place, to the user's terminal. Prior to version 0.4.2, if…

more

the container is compromised and can return attacker-controlled strings, then the attacker may be able to spoof messages in the user's terminal or change the window title. Besides logging output from containers, it also logs the names of the files it sanitizes. If these files contain ANSI escape sequences, then the same issue applies. Dangerzone is predominantly a GUI application, so this issue should leave most of our users unaffected. Nevertheless, we always suggest updating to the newest version. This issue is fixed in Dangerzone 0.4.2.

CWE(s)
CWE-150

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001.001 Junk Data Command And Control
Adversaries may add junk data to protocols used for command and control to make detection more difficult.
attack.mitre.org →
T1003.001 LSASS Memory Credential Access
Adversaries may attempt to access credential material stored in the process memory of the Local Security Authority Subsystem Service (LSASS).
attack.mitre.org →
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
attack.mitre.org →
T1003.006 DCSync Credential Access
Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…
attack.mitre.org →
T1003.007 Proc Filesystem Credential Access
Adversaries may gather credentials from the proc filesystem or `/proc`.
attack.mitre.org →
T1003.008 /etc/passwd and /etc/shadow Credential Access
Adversaries may attempt to dump the contents of <code>/etc/passwd</code> and <code>/etc/shadow</code> to enable offline password cracking.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-47252Shared CWE-150
CVE-2026-103431Shared CWE-150
CVE-2025-55193Shared CWE-150
CVE-2026-45038Shared CWE-150
CVE-2026-49147Shared CWE-150
CVE-2023-26055Shared CWE-150
CVE-2026-45803Shared CWE-150
CVE-2024-9774Shared CWE-150
CVE-2025-30089Shared CWE-150
CVE-2024-56201Shared CWE-150

Affected Assets

freedom
dangerzone
≤ 0.4.2

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.2.10
  • V1.3.12

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 partial match
blocks

Secure SDLC practices directly require input neutralization and escaping to prevent this class of flaw.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.6.6 Confidentiality or non-disclosure agreements partial match
removes
A.8.19 Installation of software on operational systems partial match
removes
A.8.25 Secure development life cycle partial match
blocks

A.8.25 mandates secure SDLC practices including secure coding guidelines, security requirements, checkpoints, testing (scans/penetration), and developer training that reach escape/sequence neutralization; this prevents exploitation for many instances but leaves a bounded remainder where implementation is incomplete or the specific sequences are missed.

A.8.26 Application security requirements partial match
blocks

A.8.26 requires identifying and specifying requirements including resilience against SQL injections, input validation, and output controls (items d, j, l, m, n), which when addressed stop exploitation of unneutralized escape sequences; this covers only a minority slice of CWE-150's broader meta/control sequences and downstream contexts, with the bulk left to implementation details in other controls.

A.8.27 Secure system architecture and engineering principles partial match
blocks

A.8.27 mandates security-by-design principles including data validation/sanitization, distrusting external input, and design reviews against attack patterns, which reaches a minority slice of improper neutralization (e.g. via secure architecture and hardening) but leaves most instances of missing or incorrect escaping in downstream components unaddressed.

A.8.28 Secure coding partial match
prevents

Secure coding standards require proper escaping and neutralization of control characters before downstream processing.

References