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CVE-2002-0403

15
FAUCET Score

CVE-2002-0403 describes a denial-of-service vulnerability in the DNS dissector of Ethereal versions prior to 0.9.3. A remote attacker can exploit this by sending a specially crafted, malformed packet, causing the Ethereal application to enter an infinite loop and consume excessive CPU resources. This vulnerability has a CVSS score of 5.0, indicating a medium severity, and can be exploited remotely with low attack complexity, resulting in a partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
0.9.1CPE matchmatch criteria
cpe:2.3:a:ethereal_group:ethereal:0.9.1:*:*:*:*:*:*:*
0.9.2CPE matchmatch criteria
cpe:2.3:a:ethereal_group:ethereal:0.9.2:*:*:*:*:*:*:*
0.9.3CPE matchmatch criteria
cpe:2.3:a:ethereal_group:ethereal:0.9.3:*:*:*:*:*:*:*
0.9_.0CPE matchmatch criteria
cpe:2.3:a:ethereal_group:ethereal:0.9_.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.40%
Probability of exploitation in next 30 days
EPSS Percentile
82.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0239 is in the 73rd percentile among its peer group of 23,701 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

debianpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux AS (Advanced Server) version 2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 7.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 7.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Powertools 6.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Powertools 7.0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Powertools 7.1
View patch

Vendor Advisories (1)

redhatCVE-2002-0403Moderate

security flaw

May 19, 2002

References

ftp.caldera.com / pub/security/OpenLinux/CSSA-2002-037.0.txt
distro.conectiva.com / atualizacoes
marc.info
debian.org / security/2002/dsa-130
PatchVendor Advisory
ethereal.com / appnotes/enpa-sa-00004.html
PatchVendor AdvisoryURL Repurposed
iss.net / security_center/static/9205.php
redhat.com / support/errata/RHSA-2002-036.html
redhat.com / support/errata/RHSA-2002-088.html
redhat.com / support/errata/RHSA-2002-170.html
securityfocus.com / bid/4807