# CVE-2012-0830: Denial of service in n/a > Remote attackers can execute arbitrary code or cause denial of service by sending requests with a large number of variables to PHP. - **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 6 Feb 2012 - **Updated:** 6 Aug 2024 - **Also known as:** DSA-2403-1, GHSA-4pjr-p785-567f, RHSA-2012:0092, RHSA-2012:0093 ## What is CVE-2012-0830? CVE-2012-0830 is a high-severity denial of service vulnerability in Php Php, published on 6 Feb 2012. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description The php_register_variable_ex function in php_variables.c in PHP 5.3.9 allows remote attackers to execute arbitrary code via a request containing a large number of variables, related to improper handling of array variables. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-4885. Weakness: CWE-399 ## Which versions are affected by CVE-2012-0830? It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `php` | Red Hat:enterprise_linux:4::as | All versions | 0:4.3.9-3.36 | | `php-debuginfo` | Red Hat:enterprise_linux:4::as | All versions | 0:4.3.9-3.36 | | `php-devel` | Red Hat:enterprise_linux:4::as | All versions | 0:4.3.9-3.36 | | `php-domxml` | Red Hat:enterprise_linux:4::as | All versions | 0:4.3.9-3.36 | | `php-gd` | Red Hat:enterprise_linux:4::as | All versions | 0:4.3.9-3.36 | | `php-imap` | Red Hat:enterprise_linux:4::as | All versions | 0:4.3.9-3.36 | | `php-ldap` | Red Hat:enterprise_linux:4::as | All versions | 0:4.3.9-3.36 | | `php-mbstring` | Red Hat:enterprise_linux:4::as | All versions | 0:4.3.9-3.36 | | `php-mysql` | Red Hat:enterprise_linux:4::as | All versions | 0:4.3.9-3.36 | | `php-ncurses` | Red Hat:enterprise_linux:4::as | All versions | 0:4.3.9-3.36 | | `php-odbc` | Red Hat:enterprise_linux:4::as | All versions | 0:4.3.9-3.36 | | `php-pear` | Red Hat:enterprise_linux:4::as | All versions | 0:4.3.9-3.36 | | `php-pgsql` | Red Hat:enterprise_linux:4::as | All versions | 0:4.3.9-3.36 | | `php-snmp` | Red Hat:enterprise_linux:4::as | All versions | 0:4.3.9-3.36 | | `php-xmlrpc` | Red Hat:enterprise_linux:4::as | All versions | 0:4.3.9-3.36 | | `php` | Red Hat:enterprise_linux:4::desktop | All versions | 0:4.3.9-3.36 | | `php-debuginfo` | Red Hat:enterprise_linux:4::desktop | All versions | 0:4.3.9-3.36 | | `php-devel` | Red Hat:enterprise_linux:4::desktop | All versions | 0:4.3.9-3.36 | | `php-domxml` | Red Hat:enterprise_linux:4::desktop | All versions | 0:4.3.9-3.36 | | `php-gd` | Red Hat:enterprise_linux:4::desktop | All versions | 0:4.3.9-3.36 | | `php-imap` | Red Hat:enterprise_linux:4::desktop | All versions | 0:4.3.9-3.36 | | `php-ldap` | Red Hat:enterprise_linux:4::desktop | All versions | 0:4.3.9-3.36 | | `php-mbstring` | Red Hat:enterprise_linux:4::desktop | All versions | 0:4.3.9-3.36 | | `php-mysql` | Red Hat:enterprise_linux:4::desktop | All versions | 0:4.3.9-3.36 | | `php-ncurses` | Red Hat:enterprise_linux:4::desktop | All versions | 0:4.3.9-3.36 | | `php-odbc` | Red Hat:enterprise_linux:4::desktop | All versions | 0:4.3.9-3.36 | | `php-pear` | Red Hat:enterprise_linux:4::desktop | All versions | 0:4.3.9-3.36 | | `php-pgsql` | Red Hat:enterprise_linux:4::desktop | All versions | 0:4.3.9-3.36 | | `php-snmp` | Red Hat:enterprise_linux:4::desktop | All versions | 0:4.3.9-3.36 | | `php-xmlrpc` | Red Hat:enterprise_linux:4::desktop | All versions | 0:4.3.9-3.36 | | `php` | Red Hat:enterprise_linux:4::es | All versions | 0:4.3.9-3.36 | | `php-debuginfo` | Red Hat:enterprise_linux:4::es | All versions | 0:4.3.9-3.36 | | `php-devel` | Red Hat:enterprise_linux:4::es | All versions | 0:4.3.9-3.36 | | `php-domxml` | Red Hat:enterprise_linux:4::es | All versions | 0:4.3.9-3.36 | | `php-gd` | Red Hat:enterprise_linux:4::es | All versions | 0:4.3.9-3.36 | | `php-imap` | Red Hat:enterprise_linux:4::es | All versions | 0:4.3.9-3.36 | | `php-ldap` | Red Hat:enterprise_linux:4::es | All versions | 0:4.3.9-3.36 | | `php-mbstring` | Red Hat:enterprise_linux:4::es | All versions | 0:4.3.9-3.36 | | `php-mysql` | Red Hat:enterprise_linux:4::es | All versions | 0:4.3.9-3.36 | | `php-ncurses` | Red Hat:enterprise_linux:4::es | All versions | 0:4.3.9-3.36 | Products: Php Php. ## How do I fix CVE-2012-0830? Upgrade to a fixed version. ## Is CVE-2012-0830 being exploited? It is not confirmed as exploited in the wild, but public exploit code for CVE-2012-0830 exists. Public exploit code: - PHP 5.4.0RC6 (x64) - Denial of Service (exploitdb) ## Other vulnerabilities in Php Php - [CVE-2012-2688](https://insights.sbomify.com/CVE-2012-2688/): Integer overflow in n/a (critical 10.0) - [CVE-2012-2376](https://insights.sbomify.com/CVE-2012-2376/): Memory corruption in n/a (critical 10.0) - [CVE-2011-3268](https://insights.sbomify.com/CVE-2011-3268/): Memory corruption in n/a (critical 10.0) - [CVE-2009-4143](https://insights.sbomify.com/CVE-2009-4143/): Other in n/a (critical 10.0) - [CVE-2008-5557](https://insights.sbomify.com/CVE-2008-5557/): Memory corruption in n/a (critical 10.0) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2012-0830 and fix it if it is affected. What it is: CVE-2012-0830 is a high-severity denial of service vulnerability in Php Php, published on 6 Feb 2012. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2012-0830 exists. Affected product: Php Php. No package-level version data is available, so check the vendor advisory linked from the reference page. Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2012-0830/ (Markdown: https://insights.sbomify.com/CVE-2012-0830/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2012-0830 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-0830 - OSV: https://osv.dev/vulnerability/CVE-2012-0830 --- From sbomify Insights: https://insights.sbomify.com/CVE-2012-0830/ Summaries are generated and may contain mistakes; the official description above is the record.