PHP 5.2.4 and earlier allows context-dependent attackers to cause a denial of service (application crash) via (1) a long string in the out_charset parameter to the iconv function; or a long string in the charset parameter to the (2) iconv_mime_decode_headers, (3) iconv_mime_decode, or (4) iconv_strlen function. NOTE: this might not be a vulnerability in most web server environments that support multiple threads, unless these issues can be demonstrated for code execution.
Published 2007-09-12 20:17:00
Updated 2018-10-15 21:38:23
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Input validationDenial of service

Threat overview for CVE-2007-4840

Top countries where our scanners detected CVE-2007-4840
Top open port discovered on systems with this issue 80
IPs affected by CVE-2007-4840 7,352
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2007-4840!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2007-4840

Probability of exploitation activity in the next 30 days: 3.19%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 91 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2007-4840

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
5.0
MEDIUM AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
NIST

CWE ids for CVE-2007-4840

  • 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)

Vendor statements for CVE-2007-4840

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