CVE-2002-0115: Snort 1.8.3 does not properly define the minimum ICMP header size, which allows remote attackers to cause a de

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MEDIUM 5.0DOWNGRADE

CVE-2002-0115 is a medium-severity flaw (CVSS 5.0) affecting snort. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Snort 1.8.3 does not properly define the minimum ICMP header size, which allows remote attackers to cause a denial of service (crash and core dump) via a malformed ICMP packet.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	3.6% (top 10%)
CISA exploited list	No
Published	2002-03-25
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: martin roesch

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2002-03-25 05:00 UTCPublished CVE record published
2026-06-16 21:56 UTCUpdated Record last modified

martin roesch snort DOWNGRADE

Affected: 1.8.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.8.3

1. Check installed version

apt-cache policy snort || rpm -q snort || snort --version

2. No fixed release: DOWNGRADE to a release before 1.8.3 (Debian / Ubuntu)

apt-cache madison snort sudo apt install snort=<VERSION_BEFORE_1.8.3> sudo apt-mark hold snort

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list snort sudo dnf downgrade snort-<VERSION_BEFORE_1.8.3> sudo dnf versionlock add snort

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Snort 1.8.3 - ICMP Denial of Service

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2002-0115?

snort: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2002-0115 being exploited?

CVE-2002-0115 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2002-0115 affect?

CVE-2002-0115 affects snort. Severity is medium (CVSS 5.0). Snort 1.8.3 does not properly define the minimum ICMP header size, which allows remote attackers to cause a denial of service (crash and core dump) via a malformed ICMP packet.

How urgent is CVE-2002-0115?

Priority 45/100. Public exploit reference

Software pages

Suricata and Snort vulnerabilities

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References

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