Summary

Security Advisory ID : BSA-2021-1013

Component : Telnet

Revision : 1.0: Final

A vulnerability was found where incorrect bounds checks in the telnet server’s (telnetd) handling of short writes and urgent data, could lead to information disclosure and corruption of heap data. An unauthenticated remote attacker could exploit these bugs by sending specially crafted telnet packets to achieve arbitrary code execution in the telnet server.

Affected Products

• All Brocade Fabric OS Versions before v9.0.0a and Brocade Fabric OS versions v9.0.1 through v9.0.1d
• Security update provided in Brocade Fabric OS: v9.1.0, v9.0.1e, v9.0.0a, v8.1.2k, v8.2.1e, v8.2.0_CBN3, v8.2.2c, v7.4.2h

Security update provided in Brocade Fabric v9.0.0a, v8.1.2k, v8.2.1e, v8.2.0_CBN3, v8.2.2c, v7.4.2h

No other Brocade Fibre Channel Products from Broadcom products are currently known to be affected by this vulnerability.

Workaround

Prohibit the use of telnet.

Revision History