A vulnerability was found in CCN-lite 2. It has been rated as critical. Affected by this issue is some unknown processing of the component Nonce Handler. The manipulation as part of a Variable leads to a type conversion vulnerability. Using CWE to declare the problem leads to CWE-704. The product does not correctly convert an object, resource, or structure from one type to a different type. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A type confusion issue was discovered in CCN-lite 2, leading to a memory access violation and a failure of the nonce feature (which, for example, helped with loop prevention). ccnl_fwd_handleInterest assumes that the union member s is of type ccnl_pktdetail_ndntlv_s. However, if the type is in fact struct ccnl_pktdetail_ccntlv_s or struct ccnl_pktdetail_iottlv_s, the memory at that point is either uninitialised or points to data that is not a nonce, which renders the code using the local variable nonce pointless. A later nonce check is insufficient.

The bug was discovered 01/31/2018. The weakness was released 01/31/2018 (GitHub Repository). The advisory is available at github.com. This vulnerability is handled as CVE-2018-6480 since 01/31/2018. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

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

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Name

• CCN-lite

Version

• 2

CPE 2.3info

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CPE 2.2info

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