CVE-2009-4018

UnknownEPSS 11.34%

Last modified

CVE-2009-4018 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 11.34% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
11.34%

95.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
PhpPhp<= 5.2.10
PhpPhp1.0
PhpPhp2.0
PhpPhp2.0b10
PhpPhp3.0
PhpPhp3.0.1
PhpPhp3.0.2
PhpPhp3.0.3
PhpPhp3.0.4
PhpPhp3.0.5
PhpPhp3.0.6
PhpPhp3.0.7
PhpPhp3.0.8
PhpPhp3.0.9
PhpPhp3.0.10
PhpPhp3.0.11
PhpPhp3.0.12
PhpPhp3.0.13
PhpPhp3.0.14
PhpPhp3.0.15
PhpPhp3.0.16
PhpPhp3.0.17
PhpPhp3.0.18
PhpPhp4
PhpPhp4.0
PhpPhp4.0.0
PhpPhp4.0.1
PhpPhp4.0.2
PhpPhp4.0.3
PhpPhp4.0.4
PhpPhp4.0.5
PhpPhp4.0.6
PhpPhp4.0.7
PhpPhp4.1.0
PhpPhp4.1.1
PhpPhp4.1.2
PhpPhp4.2
PhpPhp4.2.0
PhpPhp4.2.1
PhpPhp4.2.2
PhpPhp4.2.3
PhpPhp4.3.0
PhpPhp4.3.1
PhpPhp4.3.2
PhpPhp4.3.3
PhpPhp4.3.4
PhpPhp4.3.5
PhpPhp4.3.6
PhpPhp4.3.7
PhpPhp4.3.8

Showing 50 of 86 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2009-4018?
Severity scoring for CVE-2009-4018 is pending analysis. The EPSS model estimates a 11.34% probability of exploitation in the next 30 days.
How do I fix CVE-2009-4018?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-4018?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST