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CVE-2003-0356

34
FAUCET Score

CVE-2003-0356 describes multiple off-by-one vulnerabilities in Ethereal versions 0.9.11 and earlier, specifically within various network protocol dissectors like AIM, OSPF, and SMB. These flaws stem from improper use of string handling functions, allowing remote attackers to trigger a denial of service or potentially execute arbitrary code. The vulnerability carries a critical CVSS score of 9.8, indicating a high impact on confidentiality, integrity, and availability, with exploitation possible over the network without user interaction. While there are no known public exploits in Metasploit or ExploitDB, the CVE has a high EPSS score and significant community discussion, suggesting potential interest despite its age.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.9.12CPE matchmatch criteria
cpe:2.3:a:ethereal:ethereal:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
9.57%
Probability of exploitation in next 30 days
EPSS Percentile
94.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0957 is in the 90th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

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 Enterprise Linux ES version 2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux WS 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 Linux 8.0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux Advanced Workstation 2.1
View patch

Vendor Advisories (1)

redhatCVE-2003-0356Moderate

security flaw

May 1, 2003

References

oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A69
Broken Link
debian.org / security/2003/dsa-313
Broken LinkPatchVendor Advisory
ethereal.com / appnotes/enpa-sa-00009.html
Broken LinkPatchVendor Advisory
kb.cert.org / vuls/id/641013
Third Party AdvisoryUS Government Resource
mandriva.com / security/advisories
Third Party Advisory
redhat.com / support/errata/RHSA-2003-077.html
Broken Link