Race Condition Affecting glibc-common package, versions <0:2.17-105.el7


medium

Snyk CVSS

    Attack Complexity High

    Threat Intelligence

    EPSS 0.35% (72nd percentile)
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NVD
5.3 medium
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Red Hat
2.9 low

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  • Snyk ID SNYK-CENTOS7-GLIBCCOMMON-2055776
  • published 26 Jul 2021
  • disclosed 12 Sep 2013

How to fix?

Upgrade Centos:7 glibc-common to version 0:2.17-105.el7 or higher.

NVD Description

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

The send_dg function in resolv/res_send.c in GNU C Library (aka glibc or libc6) before 2.20 does not properly reuse file descriptors, which allows remote attackers to send DNS queries to unintended locations via a large number of requests that trigger a call to the getaddrinfo function.