CVE-2017-8779 漏洞信息： Amazon Linux Security Advisory for libtirpc: ALAS-2017-840

Memory leak when failing to parse XDR strings or bytearrays
It was found that due to the way rpcbind uses libtirpc (libntirpc), a memory leak can occur when parsing specially crafted XDR messages. An attacker sending thousands of messages to rpcbind could cause its memory usage to grow without bound, eventually causing it to be terminated by the OOM killer. (CVE-2017-8779 )

Allows unauthorized disclosure of information; allows unauthorized modification; allows disruption of service.

Please refer to Amazon advisory ALAS-2017-840 for affected packages and patching details, or update with your package manager.

Patch:
Following are links for downloading patches to fix the vulnerabilities:

ALAS-2017-840: Amazon Linux (libtirpc (0.2.4-0.8.14.amzn1) on i686)

ALAS-2017-840: Amazon Linux (libtirpc (0.2.4-0.8.14.amzn1) on x86_64)

ALAS-2017-840: Amazon Linux (libtirpc (0.2.4-0.8.14.amzn1) on src)