The IOS HTTP service in Cisco routers and switches running IOS 11.1 through 12.1 allows remote attackers to cause a denial of service by requesting a URL that contains a %% string.
Published 2000-04-26 04:00:00
Updated 2008-09-10 04:00:00
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Input validationDenial of service

Exploit prediction scoring system (EPSS) score for CVE-2000-0380

Probability of exploitation activity in the next 30 days: 95.97%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 99 % EPSS Score History EPSS FAQ

Metasploit modules for CVE-2000-0380

  • Cisco IOS HTTP GET /%% Request Denial of Service
    Disclosure Date: 2000-04-26
    First seen: 2020-04-26
    auxiliary/dos/cisco/ios_http_percentpercent
    This module triggers a Denial of Service condition in the Cisco IOS HTTP server. By sending a GET request for "/%%", the device becomes unresponsive. IOS 11.1 -> 12.1 are reportedly vulnerable. This module tested successfully against a Cisco 1600 Router IOS v11.2(18)

CVSS scores for CVE-2000-0380

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
7.1
HIGH AV:N/AC:M/Au:N/C:N/I:N/A:C
8.6
6.9
NIST

CWE ids for CVE-2000-0380

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2000-0380

Products affected by CVE-2000-0380

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