CVE-2002-1355: Multiple integer signedness errors in the BGP dissector in Ethereal 0.9.7 and earlier allow remote attackers t

Q: How do I fix CVE-2002-1355?

ethereal: upgrade to newer than 0.9.7. Exact commands for each OS are on this page.

Q: Is CVE-2002-1355 being exploited?

CVE-2002-1355 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-2002-1355 affect?

CVE-2002-1355 affects ethereal. Severity is medium (CVSS 5.0). Multiple integer signedness errors in the BGP dissector in Ethereal 0.9.7 and earlier allow remote attackers to cause a denial of service (infinite loop) via malformed messages.

Q: How urgent is CVE-2002-1355?

Priority 37/100. No elevated risk signals yet.

Routine

MEDIUM 5.0UPGRADE

CVE-2002-1355 is a medium-severity flaw (CVSS 5.0) affecting ethereal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple integer signedness errors in the BGP dissector in Ethereal 0.9.7 and earlier allow remote attackers to cause a denial of service (infinite loop) via malformed messages.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Published	2002-12-23
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: ethereal group

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

Am I affected?

Timeline

2002-12-23 05:00 UTCPublished CVE record published
2026-06-16 21:59 UTCUpdated Record last modified

ethereal group ethereal UPGRADE

Affected: <= 0.9.7

Fixed in: newer than 0.9.7

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 0.9.7 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ethereal

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-2002-1355?

ethereal: upgrade to newer than 0.9.7. Exact commands for each OS are on this page.

Is CVE-2002-1355 being exploited?

CVE-2002-1355 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-2002-1355 affect?

CVE-2002-1355 affects ethereal. Severity is medium (CVSS 5.0). Multiple integer signedness errors in the BGP dissector in Ethereal 0.9.7 and earlier allow remote attackers to cause a denial of service (infinite loop) via malformed messages.

How urgent is CVE-2002-1355?

Priority 37/100. No elevated risk signals yet.

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References

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