Utimaco CryptoServer HSM PKCS11 R2 Provider access control

Summaryinfo

A vulnerability marked as critical has been reported in Utimaco CryptoServer HSM. The affected element is an unknown function of the component PKCS11 R2 Provider. This manipulation causes access control. The identification of this vulnerability is CVE-2018-19589. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in Utimaco CryptoServer HSM (the affected version is unknown) and classified as critical. Affected by this vulnerability is an unknown code of the component PKCS11 R2 Provider. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Incorrect Access Controls of Security Officer (SO) in PKCS11 R2 provider that ships with the Utimaco CryptoServer HSM product package allows an SO authenticated to a slot to retrieve attributes of keys marked as private keys in external key storage, and also delete keys marked as private keys in external key storage. This compromises the availability of all keys configured with external key storage and may result in an economic attack in which the attacker denies legitimate users access to keys while maintaining possession of an encrypted copy (blob) of the external key store for ransom. This attack has been dubbed reverse ransomware attack and may be executed via a physical connection to the CryptoServer or remote connection if SSH or remote access to LAN CryptoServer has been compromised. The Confidentiality and Integrity of the affected keys, however, remain untarnished.

The weakness was shared 04/09/2019 (Website). The advisory is shared at support.hsm.utimaco.com. This vulnerability is known as CVE-2018-19589 since 11/26/2018. The attack can be launched remotely. A single authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Utimaco

Name

• CryptoServer HSM

CPE 2.3info

• 🔍

CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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