libtirpc vulnerabilities

A flaw was found in libtirpc involving unbounded decoding of PMAPPROC_DUMP replies. A remote attacker can send specially crafted replies to a client application using the pmap_getmaps() function against an attacker-controlled host, causing excessive memory and CPU allocation and a denial of service (DoS) in the client process due to resource exhaustion.

A flaw was found in libtirpc allowing an authenticated remote attacker to send oversized wrapped data requests to an RPC service configured with RPCSEC_GSS integrity or privacy. This leads to unbounded memory allocation and a denial of service (DoS) by exhausting system resources, causing the service to become unstable or terminate.

In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can, in turn, lead to an svc_run infinite loop without accepting new connections.