CVE-2023-39342

Terminal spoofing via unsanitized CLI output

Published Aug 8, 2023 · Updated Oct 4, 2024

Terminal escape injection in Dangerzone before 0.4.2 allows local users to spoof CLI messages through crafted files or sandbox output. IsolationProvider.print_progress and filename logging wrote untrusted strings to the terminal without replacing ANSI control characters. Exploitation requires a user to process a crafted filename or a compromised conversion container to emit attacker-controlled output; the result is terminal-message or window-title spoofing.

CVSS severity3.6
Low
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Terminal escape injection in Dangerzone before 0.4.2 allows local users to spoof CLI messages through crafted files or sandbox output. IsolationProvider.print_progress and filename logging wrote untrusted strings to the terminal without replacing ANSI control characters. Exploitation requires a user to process a crafted filename or a compromised conversion container to emit attacker-controlled output; the result is terminal-message or window-title spoofing.

The record

CVE
CVE-2023-39342
Published
Aug 8, 2023
Updated
Oct 4, 2024
Vendor
Freedom of the Press Foundation
Product
Dangerzone
Classifications
CWE-150
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.4.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Freedom of the Press Foundation · Dangerzoneversion=< 0.4.2

Published CVSS scores

3.6GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-150Improper Neutralization of Escape, Meta, or Control Sequences

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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