RSA BSAFE Crypto-J Cryptography Failure

RSA BSAFE Crypto-J versions prior to 6.2.2 suffer from improper OCSP validation and PKCS#12 timing attack vulnerabilities.


MD5 | 49ddf75098380770f8fc8cd1d9e75886

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ESA-2016-154: RSA BSAFE(r) Crypto-J Multiple Security Vulnerabilities

EMC Identifier: ESA-2016-154

CVE Identifier: CVE-2016-8212, CVE-2016-8217

Severity Rating: See below for scores for individual issues

Affected Products:
RSA BSAFE Crypto-J versions prior to 6.2.2

Unaffected Products:
RSA BSAFE Crypto-J 6.2.2

Summary:
RSA announces security fixes to RSA BSAFE(r) Crypto-J designed to address two security vulnerabilities in the Crypto-J JCE cryptographic provider.

Details:

Improper OCSP Validation Vulnerability ( CVE-2016-8212)
OCSP responses have two time values; thisUpdate and nextUpdate. These specify a validity period, however both values are optional. Crypto-J treats the lack of a nextUpdate as indicating that the OCSP response is valid indefinitely instead of restricting its validity for a brief period surrounding the thisUpdate time. This vulnerability is similar to the issue described in CVE-2015-4748.
CVSS v3 Base Score: 4.8 (AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)

PKCS#12 Timing Attack Vulnerability (CVE-2016-8217)
A possible timing attack could be carried out by modifying a PKCS#12 file that has an integrity MAC for which the password is not known. An attacker could then feed the modified PKCS#12 file to the toolkit and guess the current MAC one by at a time. This is possible because Crypto-J uses a non-constant-time method to compare the stored MAC with the calculated MAC. This vulnerability is similar to the issue described in CVE-2015-2601.
CVSS v3 Base Score: 5.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

Recommendation:

The below version contains a fix for the above issues
RSA BSAFE Crypto-J 6.2.2 and later

RSA recommends affected customers upgrade to the version listed above at the earliest opportunity.
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