Summary

AES OCB mode for 32-bit x86 platforms using the AES-NI assembly optimised implementation will not encrypt the entirety of the data under some circumstances. This could reveal sixteen bytes of data that was preexisting in the memory that wasn't written. In the special case of "in place" encryption, sixteen bytes of the plaintext would be revealed. Since OpenSSL does not support OCB based cipher suites for TLS and DTLS, they are both unaffected. Fixed in OpenSSL 3.0.5 (Affected 3.0.0-3.0.4). Fixed in OpenSSL 1.1.1q (Affected 1.1.1-1.1.1p).

Products Affected

Brocade G730 switch operating on any vesion of Brocade Fabric OS v9.x

Products Confirmed Not Affected

Brocade Fabric OS v8.x, 7.x and 9.x operating on any other switch type are not affected by this vulnerability

Brocade SANnav and Brocade ASCG are not affected by this vulnerability

Solution

Solution provided in Brocade Fabric OS v9.2.0

Revision History

Disclaimer

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