CVE-2017-6430: The compile_tree function in ef_compiler.c in the Etterfilter utility in Ettercap 0.8.2 and earlier allows rem

Q: How do I fix CVE-2017-6430?

ettercap: upgrade to newer than 0.8.2. Exact commands for each OS are on this page.

Q: Is CVE-2017-6430 being exploited?

CVE-2017-6430 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2017-6430 affect?

CVE-2017-6430 affects ettercap. Severity is medium (CVSS 5.5). The compile_tree function in ef_compiler.c in the Etterfilter utility in Ettercap 0.8.2 and earlier allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted filter.

Q: How urgent is CVE-2017-6430?

Priority 44/100. Public exploit reference

This month

MEDIUM 5.5UPGRADE

CVE-2017-6430 is a medium-severity flaw (CVSS 5.5) affecting ettercap. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The compile_tree function in ef_compiler.c in the Etterfilter utility in Ettercap 0.8.2 and earlier allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted filter.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	2.0% (top 20%)
CISA exploited list	No
Weakness	CWE-125
Published	2017-03-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ettercap-project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-03-15 15:59 UTCPublished CVE record published
2026-06-17 01:22 UTCUpdated Record last modified

ettercap-project ettercap UPGRADE

Affected: <= 0.8.2

Fixed in: newer than 0.8.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 0.8.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ettercap

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ettercap

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2017-6430?

ettercap: upgrade to newer than 0.8.2. Exact commands for each OS are on this page.

Is CVE-2017-6430 being exploited?

CVE-2017-6430 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-2017-6430 affect?

CVE-2017-6430 affects ettercap. Severity is medium (CVSS 5.5). The compile_tree function in ef_compiler.c in the Etterfilter utility in Ettercap 0.8.2 and earlier allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted filter.

How urgent is CVE-2017-6430?

Priority 44/100. Public exploit reference

Related CVEs

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CVE-2017-8366 CRITICAL 9.8 DOWNGRADE The strescape function in ec_strings.c in Ettercap 0.8.2 allows remote attackers to cause a denial of service
CVE-2014-9381 MEDIUM 5.0 DOWNGRADE Integer signedness error in the dissector_cvs function in dissectors/ec_cvs.c in Ettercap 0.8.1 allows remote
CVE-2014-9380 MEDIUM 5.0 DOWNGRADE The dissector_cvs function in dissectors/ec_cvs.c in Ettercap 0.8.1 allows remote attackers to cause a denial
CVE-2014-9379 HIGH 7.5 DOWNGRADE The radius_get_attribute function in dissectors/ec_radius.c in Ettercap 0.8.1 performs an incorrect cast, whic

References

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