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Stack-based Buffer Overflow Affecting glibc package, versions <0:2.17-106.el7_2.4

critical

Snyk CVSS

    Attack Complexity Low
    User Interaction Required

    Threat Intelligence

    Exploit Maturity Mature
    EPSS 97.41% (100th percentile)
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NVD
8.1 high
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Red Hat
6.3 medium

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  • Snyk ID SNYK-CENTOS7-GLIBC-2061609
  • published 26 Jul 2021
  • disclosed 16 Feb 2016
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Introduced: 16 Feb 2016

CVE-2015-7547 Open this link in a new tab
CWE-121 Open this link in a new tab

How to fix?

Upgrade Centos:7 glibc to version 0:2.17-106.el7_2.4 or higher.

NVD Description

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

Multiple stack-based buffer overflows in the (1) send_dg and (2) send_vc functions in the libresolv library in the GNU C Library (aka glibc or libc6) before 2.23 allow remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a crafted DNS response that triggers a call to the getaddrinfo function with the AF_UNSPEC or AF_INET6 address family, related to performing "dual A/AAAA DNS queries" and the libnss_dns.so.2 NSS module.