CVE-2022-23093Public exploitNetwork attack vector

Process crash via unchecked IP-option header copying

Published Feb 15, 2024 · Updated Oct 28, 2024

Stack-based buffer overflow in FreeBSD ping allows remote attackers to crash a running ping process through a malicious reply. The pr_pack() response parser copies IP and ICMP headers into fixed stack buffers without reserving space for IP options, permitting an overflow of up to 40 bytes. The local user must be running /sbin/ping toward the hostile host; privileges are already dropped and Capsicum confines the resulting process failure.

CVSS severity6.5
Medium
EPSS probability2.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in FreeBSD ping allows remote attackers to crash a running ping process through a malicious reply. The pr_pack() response parser copies IP and ICMP headers into fixed stack buffers without reserving space for IP options, permitting an overflow of up to 40 bytes. The local user must be running /sbin/ping toward the hostile host; privileges are already dropped and Capsicum confines the resulting process failure.

The record

CVE
CVE-2022-23093
Published
Feb 15, 2024
Updated
Oct 28, 2024
Vendor
The FreeBSD Project
Product
FreeBSD
Classifications
CWE-120, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 28, 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=12.3-RELEASE <p10
  2. Affected versionversion=12.4-RC2 <p2
  3. Affected versionversion=13.1-RELEASE <p5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The FreeBSD Project · FreeBSDversion=12.3-RELEASE <p10; version=12.4-RC2 <p2; version=13.1-RELEASE <p5

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499.004Application or System Exploitation

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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