Vulnerability Description
The pcntl_exec implementation in PHP before 5.4.41, 5.5.x before 5.5.25, and 5.6.x before 5.6.9 truncates a pathname upon encountering a \x00 character, which might allow remote attackers to bypass intended extension restrictions and execute files with unexpected names via a crafted first argument. NOTE: this vulnerability exists because of an incomplete fix for CVE-2006-7243.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Enterprise Linux | 6.0 |
| Php | Php | <= 5.4.40 |
| Apple | Mac Os X | <= 10.10.4 |
| Redhat | Enterprise Linux Desktop | 7.0 |
| Redhat | Enterprise Linux Hpc Node | 7.0 |
| Redhat | Enterprise Linux Hpc Node Eus | 7.1 |
| Redhat | Enterprise Linux Server | 7.0 |
| Redhat | Enterprise Linux Server Eus | 7.1 |
| Redhat | Enterprise Linux Workstation | 7.0 |
Related Weaknesses (CWE)
References
- http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158616.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158915.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/159031.html
- http://lists.opensuse.org/opensuse-updates/2015-06/msg00002.html
- http://php.net/ChangeLog-5.phpPatch
- http://rhn.redhat.com/errata/RHSA-2015-1135.html
- http://rhn.redhat.com/errata/RHSA-2015-1186.html
- http://rhn.redhat.com/errata/RHSA-2015-1187.html
- http://rhn.redhat.com/errata/RHSA-2015-1218.html
- http://rhn.redhat.com/errata/RHSA-2015-1219.html
- http://www.debian.org/security/2015/dsa-3280
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.h
- http://www.securityfocus.com/bid/75056
- http://www.securitytracker.com/id/1032431
FAQ
What is CVE-2015-4026?
CVE-2015-4026 is a vulnerability with a CVSS score of 7.5 (HIGH). The pcntl_exec implementation in PHP before 5.4.41, 5.5.x before 5.5.25, and 5.6.x before 5.6.9 truncates a pathname upon encountering a \x00 character, which might allow remote attackers to bypass in...
How severe is CVE-2015-4026?
CVE-2015-4026 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-4026?
Check the references section above for vendor advisories and patch information. Affected products include: Redhat Enterprise Linux, Php Php, Apple Mac Os X, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Hpc Node.