CVE-2003-0567 EXPLOIT
7.8
HIGH · CVSS 2.0 · EPSS 16.6% (pctl 97)
Patch early
A public exploit exists.
Description
Cisco IOS 11.x and 12.0 through 12.2 allows remote attackers to cause a denial of service (traffic block) by sending a particular sequence of IPv4 packets to an interface on the device, causing the input queue on that interface to be marked as full.
Scoring
| CVSS | 7.8 (HIGH, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:C |
| EPSS | 16.58% — more likely to be exploited than 97% of all CVEs |
| Weakness | CWE-20 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2003-08-18 |
| Last modified | 2026-06-16 |
Affected (3)
| Vendor | Product |
|---|---|
| cisco | ios |
| cisco | ons 15454 optical transport platform |
| cisco | optical networking systems software |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Cisco IOS - using hping Remote Denial of Service | 2003-07-22 |
| exploit-db | Cisco IOS - 'cisco-bug-44020.c' IPv4 Packet Denial of Service | 2003-07-21 |
| exploit-db | Cisco IOS - IPv4 Packets Denial of Service | 2003-07-18 |
References
- http://lists.grok.org.uk/pipermail/full-disclosure/2003-July/006743.html
- http://www.cert.org/advisories/CA-2003-15.html
- http://www.cert.org/advisories/CA-2003-17.html
- http://www.cisco.com/warp/public/707/cisco-sa-20030717-blocked.shtml
- http://www.kb.cert.org/vuls/id/411332
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5603
- http://lists.grok.org.uk/pipermail/full-disclosure/2003-July/006743.html
- http://www.cert.org/advisories/CA-2003-15.html
- http://www.cert.org/advisories/CA-2003-17.html
- http://www.cisco.com/warp/public/707/cisco-sa-20030717-blocked.shtml
- http://www.kb.cert.org/vuls/id/411332
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5603
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