A vulnerability was found in PHP (Programming Language Software) (affected version unknown). It has been rated as critical. Affected by this issue is the function eval. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The perl extension in PHP does not follow safe_mode restrictions, which allows context-dependent attackers to execute arbitrary code via the Perl eval function. NOTE: this might only be a vulnerability in limited environments.

The weakness was shared 08/30/2007 (Website). The advisory is shared for download at milw0rm.com. This vulnerability is handled as CVE-2007-4596 since 08/30/2007. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1059.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (4314).

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• Programming Language Software

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• PHP

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• open-source

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