What’s Vulnerable › Vulnerabilities

CVE-2004-1018

• Severity: critical (CVSS 10.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 16.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2005-01-10 · updated 2026-06-16

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.

Affected products

• Canonical Ubuntu Linux: 4.10
• PHP: before 4.3.10 — fixed in 4.3.10

How to fix

Upgrade to a fixed version: PHP 4.3.10. Check the vendor advisory for mitigations.

References

• http://marc.info/?l=bugtraq&m=110314318531298&w=2
• http://www.hardened-php.net/advisories/012004.txt
• http://www.mandriva.com/security/advisories?name=MDKSA-2004:151
• http://www.mandriva.com/security/advisories?name=MDKSA-2005:072
• http://www.osvdb.org/12411
• http://www.php.net/release_4_3_10.php
• http://www.redhat.com/support/errata/RHSA-2005-032.html
• http://www.redhat.com/support/errata/RHSA-2005-816.html
• http://www.securityfocus.com/advisories/9028
• http://www.securityfocus.com/archive/1/384920
• http://www.securityfocus.com/bid/12045
• https://bugzilla.fedora.us/show_bug.cgi?id=2344

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