CVE-2023-4806 (GCVE-0-2023-4806)
Vulnerability from cvelistv5
Published
2023-09-18 16:33
Modified
2025-08-18 08:59
CWE
Summary
A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the _nss_*_gethostbyname2_r and _nss_*_getcanonname_r hooks without implementing the _nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and AI_V4MAPPED as flags.
References
secalert@redhat.com https://access.redhat.com/errata/RHBA-2024:2413
secalert@redhat.com https://access.redhat.com/errata/RHSA-2023:5453 Third Party Advisory
secalert@redhat.com https://access.redhat.com/errata/RHSA-2023:5455 Third Party Advisory
secalert@redhat.com https://access.redhat.com/errata/RHSA-2023:7409
secalert@redhat.com https://access.redhat.com/security/cve/CVE-2023-4806 Third Party Advisory
secalert@redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2237782 Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2023/10/03/4
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2023/10/03/5
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2023/10/03/6
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2023/10/03/8
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2023:5453 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2023:5455 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2023:7409
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/security/cve/CVE-2023-4806 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://bugzilla.redhat.com/show_bug.cgi?id=2237782 Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL/
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA/
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/
af854a3a-2127-422b-91ae-364da2661108 https://security.gentoo.org/glsa/202310-03
af854a3a-2127-422b-91ae-364da2661108 https://security.netapp.com/advisory/ntap-20240125-0008/
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:2.28-225.el8_8.6   < *
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/o:redhat:enterprise_linux:8::baseos
    cpe:/a:redhat:enterprise_linux:8::crb
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:2.28-225.el8_8.6   < *
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/o:redhat:enterprise_linux:8::baseos
    cpe:/a:redhat:enterprise_linux:8::crb
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Unaffected: 0:2.28-189.8.el8_6   < *
    cpe:/o:redhat:rhel_eus:8.6::baseos
    cpe:/a:redhat:rhel_eus:8.6::crb
    cpe:/o:redhat:rhev_hypervisor:4.4::el8
    cpe:/a:redhat:rhel_eus:8.6::appstream
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:2.34-100.el9   < *
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/o:redhat:enterprise_linux:9::baseos
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:2.34-60.el9_2.7   < *
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/o:redhat:enterprise_linux:9::baseos
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:2.34-100.el9   < *
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/o:redhat:enterprise_linux:9::baseos
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:2.34-60.el9_2.7   < *
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/o:redhat:enterprise_linux:9::baseos
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
   Red Hat Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 Unaffected: 0:2.28-189.8.el8_6   < *
    cpe:/o:redhat:rhel_eus:8.6::baseos
    cpe:/a:redhat:rhel_eus:8.6::crb
    cpe:/o:redhat:rhev_hypervisor:4.4::el8
    cpe:/a:redhat:rhel_eus:8.6::appstream
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Show details on NVD website


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In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the _nss_*_gethostbyname2_r and _nss_*_getcanonname_r hooks without implementing the _nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and AI_V4MAPPED as flags.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2025-08-18T08:59:10.030Z\"}, \"x_redhatCweChain\": \"CWE-416: Use After Free\"}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-4806\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-08-18T08:59:10.030Z\", \"dateReserved\": \"2023-09-06T16:26:35.613Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2023-09-18T16:33:57.211Z\", \"assignerShortName\": \"redhat\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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