Resource Exhaustion Affecting libtirpc package, versions <0:0.2.4-0.8.el7_3


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    55.1% (98th percentile)

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  • Snyk ID SNYK-RHEL7-LIBTIRPC-4670352
  • published 26 Jul 2021
  • disclosed 3 May 2017

How to fix?

Upgrade RHEL:7 libtirpc to version 0:0.2.4-0.8.el7_3 or higher.
This issue was patched in RHSA-2017:1263.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libtirpc package and not the libtirpc package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

rpcbind through 0.2.4, LIBTIRPC through 1.0.1 and 1.0.2-rc through 1.0.2-rc3, and NTIRPC through 1.4.3 do not consider the maximum RPC data size during memory allocation for XDR strings, which allows remote attackers to cause a denial of service (memory consumption with no subsequent free) via a crafted UDP packet to port 111, aka rpcbomb.