PrestaShop up to 1.7.2.4 Orders Serialized Object code injection

Summaryinfo

A vulnerability classified as critical has been found in PrestaShop up to 1.7.2.4. The affected element is an unknown function of the component Orders Handler. This manipulation as part of Serialized Object causes code injection. This vulnerability is handled as CVE-2018-20717. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in PrestaShop up to 1.7.2.4 (E-Commerce Management Software). It has been declared as critical. Affected by this vulnerability is some unknown processing of the component Orders Handler. The manipulation as part of a Serialized Object leads to a code injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In the orders section of PrestaShop before 1.7.2.5, an attack is possible after gaining access to a target store with a user role with the rights of at least a Salesman or higher privileges. The attacker can then inject arbitrary PHP objects into the process and abuse an object chain in order to gain Remote Code Execution. This occurs because protection against serialized objects looks for a 0: followed by an integer, but does not consider 0:+ followed by an integer.

The bug was discovered 05/07/2018. The weakness was released 01/15/2019 (Website). It is possible to read the advisory at blog.ripstech.com. This vulnerability is known as CVE-2018-20717 since 01/15/2019. The exploitation appears to be easy. The attack can be launched remotely. Required for exploitation is a single authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 253 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.7.2.5 eliminates this vulnerability.

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Productinfo

Type

• E-Commerce Management Software

Name

• PrestaShop

Version

• 1.7.2.0
• 1.7.2.1
• 1.7.2.2
• 1.7.2.3
• 1.7.2.4

License

• open-source

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CPE 2.2info

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