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Servers and applications

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 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…

Severity
High 10.0
Published
10 Jan 2005
Last changed
16 Jun 2026
Added to UpHeron
14 Oct 2026
Fixed in
4.3.10
Exploit chance
16% in the next 30 daysHigher than 96% of CVEs. EPSS by FIRST, 12 Nov 2026
Attack
Over the network · No login needed
Attacker can
Read data · Change data · Take it down
CVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
Sources
NVD

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.

From NVD.

Affected software

SoftwareAffected versions
PHPServers and applications · cpe:a:php:php
  • Every version before 4.3.10

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2004-1018
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2004-1018