corosync before version 2.4.4 is vulnerable to an integer overflow in exec/totemcrypto.c.

The pcsd web UI in PCS 0.9.139 and earlier allows remote authenticated users to execute arbitrary commands via "escape characters" in a URL.

Race condition in pcsd in PCS 0.9.139 and earlier uses a global variable to validate usernames, which allows remote authenticated users to gain privileges by sending a command that is checked for security after another user is authenticated.

The init_nss_hash function in exec/totemcrypto.c in Corosync 2.0 before 2.3 does not properly initialize the HMAC key, which allows remote attackers to cause a denial of service (crash) via a crafted packet.