CVE-2023-43618Public exploitNetwork attack vector

Local IP disclosure via unencrypted address exchange

Published Sep 20, 2023 · Updated Sep 25, 2024

Information disclosure in Croc before 9.6.16 allows remote attackers to read sender-local IP addresses from protocol traffic. Croc sender logic serializes every locally assigned address into the ips? reply and transmits that reply before establishing peer encryption. A transfer using automatic address discovery is required; exposure is limited to local addresses that can reveal internal network structure or help identify the sender.

CVSS severity5.3
Medium
EPSS probability0.40%
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 remote attackers to read sender-local IP addresses from protocol traffic. Croc sender logic serializes every locally assigned address into the ips? reply and transmits that reply before establishing peer encryption. A transfer using automatic address discovery is required; exposure is limited to local addresses that can reveal internal network structure or help identify the sender.

The record

CVE
CVE-2023-43618
Published
Sep 20, 2023
Updated
Sep 25, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-311, T1016
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-311Missing Encryption of Sensitive Data
T1016System Network Configuration 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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