CVE-2023-43621Public exploit

Local shared-secret disclosure via process arguments

Published Sep 20, 2023 · Updated Sep 24, 2024

Information disclosure in Croc before 9.6.16 allows local users to read a transfer shared secret from process arguments. The CLI accepts the sender or receiver code phrase as a command-line argument, causing the operating system to expose it in process listings. On multiuser Linux and most UNIX-like hosts, another logged-in user can capture the secret and receive files intended for the recipient.

CVSS severity4.7
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Croc before 9.6.16 allows local users to read a transfer shared secret from process arguments. The CLI accepts the sender or receiver code phrase as a command-line argument, causing the operating system to expose it in process listings. On multiuser Linux and most UNIX-like hosts, another logged-in user can capture the secret and receive files intended for the recipient.

The record

CVE
CVE-2023-43621
Published
Sep 20, 2023
Updated
Sep 24, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1057
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.7NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1057Process Discovery

Public exploit references

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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