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broadcomBroadcom Security ResponseBSA-2022-627
HistorySep 13, 2022 - 12:00 a.m.

CVE-2018-0732. Client DoS due to large DH parameter.

2022-09-1300:00:00
Broadcom Security Response
www.broadcom.com
12

During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o).

Affected Products

  • Brocade Fabric OS versions before v9.0.0, v.7.4.2.j, v.8.2.3c

Product under investigation

  • Brocade Active Support Connectivity Gateway (ASC-G)