CVE-2003-0356
9.8 · CRITICALOverview
CVE-2003-0356 is a critical-severity vulnerability affecting ethereal ethereal. It was published on June 9, 2003 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Multiple off-by-one vulnerabilities in Ethereal 0.9.11 and earlier allow remote attackers to cause a denial of service and possibly execute arbitrary code via the (1) AIM, (2) GIOP Gryphon, (3) OSPF, (4) PPTP, (5) Quake, (6) Quake2, (7) Quake3, (8) Rsync, (9) SMB, (10) SMPP, and (11) TSP dissectors, which do not properly use the tvb_get_nstringz and tvb_get_nstringz0 functions.
Remediation
Check the references section for vendor advisories and patches from ethereal. Update ethereal to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| ethereal | ethereal | >= 0, < 0.9.12 | Affected |
References
Frequently Asked Questions
What is CVE-2003-0356?
CVE-2003-0356 is a critical-severity vulnerability affecting ethereal ethereal. It was published on June 9, 2003 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2003-0356?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2003-0356?
Check the references section for vendor advisories and patches from ethereal. Update ethereal to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2003-0356?
CyberStrike's AI-powered security agents can automatically detect CVE-2003-0356 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
Related CRITICAL CVEs from 2003
View all →DB4Web server, when configured to use verbose debug messages, allows remote attackers to use DB4Web
The LDAP name service (nsd) in IRIX 6.5.19 and earlier does not properly verify if the USERPASSWORD
Off-by-one error in the xlog function of mountd in the Linux NFS utils package (nfs-utils) before 1.
Off-by-one error in the fb_realpath() function, as derived from the realpath function in BSD, may al
The Script.prototype.freeze/thaw functionality in Mozilla 1.4 and earlier allows attackers to execut
Buffer overflow in defang in libhttpd.c for thttpd 2.21 to 2.23b1 allows remote attackers to execute
Double free vulnerability in OpenSSL 0.9.7 allows remote attackers to cause a denial of service (cra
Pedestal Software Integrity Protection Driver (IPD) 1.3 and earlier allows privileged attackers, suc