CVE-2009-4018

Publication date 23 November 2009

Last updated 24 July 2024

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
php5	9.10 karmic	Fixed 5.2.10.dfsg.1-2ubuntu6.3
	9.04 jaunty	Fixed 5.2.6.dfsg.1-3ubuntu4.4
	8.10 intrepid	Fixed 5.2.6-2ubuntu4.5
	8.04 LTS hardy	Fixed 5.2.4-2ubuntu5.9
	6.06 LTS dapper	Fixed 5.1.2-1ubuntu3.17

Notes

mdeslaur

PoC in php bug report safe_mode bug

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
php5	Upstream: http://svn.php.net/viewvc/?view=revision&revision=286360

CVE-2009-4018

Status

Notes

mdeslaur

Patch details

References

Related Ubuntu Security Notices (USN)

Other references