UpHeron
All vulnerabilities

Servers and applications

CVE-2009-4018

The proc_open function in ext/standard/proc_open.c in PHP before 5.2.11 and 5.3.x before 5.3.1 does not enforce the (1) safe_mode_allowed_env_vars and (2) safe_mode_protected_env_vars directives, which allows context-dependent attackers to execute programs with an arbitrary environment via the env parameter, as demonstrated by a crafted value of the LD_LIBRARY_PATH environment variable.

Severity
High 7.5
Published
29 Nov 2009
Last changed
16 Jun 2026
Added to UpHeron
14 Oct 2026
Exploit chance
11% in the next 30 daysHigher than 96% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-264
Attack
Over the network · No login needed
Attacker can
Read some data · Change some data · Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Sources
NVD

Affected software

SoftwareAffected versions
PHPServers and applications · cpe:a:php:php
  • Version 5.3.0
  • Version 5.2.9
  • Version 5.2.8
  • Version 5.2.7
All 106 release lines
  • Every version up to 5.2.10
  • Version 1.0
  • Version 2.0b10
  • Version 2.0
  • Version 3.0
  • Version 3.0.1
  • Version 3.0.2
  • Version 3.0.3
  • Version 3.0.4
  • Version 3.0.5
  • Version 3.0.6
  • Version 3.0.7
  • Version 3.0.8
  • Version 3.0.9
  • Version 3.0.10
  • Version 3.0.11
  • Version 3.0.12
  • Version 3.0.13
  • Version 3.0.14
  • Version 3.0.15
  • Version 3.0.16
  • Version 3.0.17
  • Version 3.0.18
  • Version 4.0-beta1
  • Version 4.0-beta2
  • Version 4.0-beta3
  • Version 4.0-beta4
  • Version 4.0-beta_4_patch1
  • Version 4.0-rc1
  • Version 4.0-rc2
  • Version 4
  • Version 4.0.1
  • Version 4.0.1-patch1
  • Version 4.0.1-patch2
  • Version 4.0.2
  • Version 4.0.3
  • Version 4.0.3-patch1
  • Version 4.0.4
  • Version 4.0.4-patch1
  • Version 4.0.5
  • Version 4.0.6
  • Version 4.0.7-rc1
  • Version 4.0.7-rc2
  • Version 4.0.7-rc3
  • Version 4.0.7-rc4
  • Version 4.0.7
  • Version 4.1.0
  • Version 4.1.1
  • Version 4.1.2
  • Version 4.2
  • Version 4.2.1
  • Version 4.2.2
  • Version 4.2.3
  • Version 4.3.0
  • Version 4.3.1
  • Version 4.3.2
  • Version 4.3.3
  • Version 4.3.4
  • Version 4.3.5
  • Version 4.3.6
  • Version 4.3.7
  • Version 4.3.8
  • Version 4.3.9
  • Version 4.3.10
  • Version 4.3.11
  • Version 4.4.0
  • Version 4.4.1
  • Version 4.4.2
  • Version 4.4.3
  • Version 4.4.4
  • Version 4.4.5
  • Version 4.4.6
  • Version 4.4.7
  • Version 4.4.8
  • Version 4.4.9
  • Version 5.0.0-beta1
  • Version 5.0.0-beta2
  • Version 5.0.0-beta3
  • Version 5.0.0-beta4
  • Version 5.0-rc1
  • Version 5.0.0-rc1
  • Version 5.0-rc2
  • Version 5.0.0-rc2
  • Version 5.0-rc3
  • Version 5.0.0-rc3
  • Version 5
  • Version 5.0.1
  • Version 5.0.2
  • Version 5.0.3
  • Version 5.0.4
  • Version 5.0.5
  • Version 5.1.0
  • Version 5.1.1
  • Version 5.1.2
  • Version 5.1.3
  • Version 5.1.4
  • Version 5.1.5
  • Version 5.1.6
  • Version 5.2.0
  • Version 5.2.2
  • Version 5.2.4
  • Version 5.2.6
  • Version 5.2.7
  • Version 5.2.8
  • Version 5.2.9
  • Version 5.3.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2009-4018
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2009-4018