--- title: "CVE-2007-4783\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2007-4783?format=md keywords: index, follow --- # CVE-2007-4783 Publication date 10 September 2007 Last updated 24 July 2024 --- Ubuntu priority **Negligible** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## Description The iconv\_substr function in PHP 5.2.4 and earlier allows context-dependent attackers to cause (1) a denial of service (application crash) via a long string in the charset parameter, probably also requiring a long string in the str parameter; or (2) a denial of service (temporary application hang) via a long string in the str parameter. 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. [Read the notes from the security team](https://ubuntu.com/security/CVE-2007-4783?format=md#notes) ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | php5 | 8.04 LTS hardy | Ignored end of life, was needed | | 7.10 gutsy | Ignored end of life, was needed | | 7.04 feisty | Ignored end of life, was needed | | 6.10 edgy | Ignored end of life, was needed | | 6.06 LTS dapper | Ignored end of life, was needed | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) ## Notes --- ### [kees](https://launchpad.net/~kees) local php instance crasher only, not a serious security issue ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4783) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2007-4783) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2007-4783) * [Debian](https://security-tracker.debian.org/tracker/CVE-2007-4783) ### Other references *