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In an uncommon situation, the gaih_inet function may use memory that has been freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is called and the hosts database in /etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge."}, {"lang": "es", "value": "Se encontr\u00f3 una falla en glibc. En una situaci\u00f3n poco com\u00fan, la funci\u00f3n gaih_inet puede utilizar memoria que se ha liberado, lo que provoca un bloqueo de la aplicaci\u00f3n. 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{"affected_release": [{"advisory": "RHSA-2023:5455", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "glibc-0:2.28-225.el8_8.6", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2023-10-05T00:00:00Z"}, {"advisory": "RHSA-2023:5455", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "glibc-0:2.28-225.el8_8.6", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2023-10-05T00:00:00Z"}, {"advisory": "RHSA-2023:7409", "cpe": "cpe:/a:redhat:rhel_eus:8.6", "package": "glibc-0:2.28-189.8.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Extended Update Support", "release_date": "2023-11-21T00:00:00Z"}, {"advisory": "RHSA-2023:5453", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "glibc-0:2.34-60.el9_2.7", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-10-05T00:00:00Z"}, {"advisory": "RHSA-2023:5453", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "glibc-0:2.34-60.el9_2.7", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-10-05T00:00:00Z"}, {"advisory": "RHSA-2023:7409", "cpe": "cpe:/o:redhat:rhev_hypervisor:4.4::el8", "package": "glibc-0:2.28-189.8.el8_6", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8", "release_date": "2023-11-21T00:00:00Z"}], "bugzilla": {"description": "glibc: potential use-after-free in gaih_inet()", "id": "2237798", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2237798"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-416", "details": ["A flaw was found in glibc. In an uncommon situation, the gaih_inet function may use memory that has been freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is called and the hosts database in /etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge.", "A flaw was found in glibc. In an uncommon situation, the gaih_inet function may use memory that has been freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is called and the hosts database in /etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge."], "mitigation": {"lang": "en:us", "value": "Removing the \"SUCCESS=continue\" or \"SUCCESS=merge\" configuration from the hosts database in /etc/nsswitch.conf will mitigate this vulnerability.\nNote that, these options are not supported by the hosts database, if they were working before it was because of this bug."}, "name": "CVE-2023-4813", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "compat-glibc", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "glibc", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "compat-glibc", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "glibc", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2022-03-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-4813\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-4813"], "statement": "This issue is only exploitable when the condition detailed in the description is present in the system. However, all glibc versions shipped in Red Hat Enterprise Linux are vulnerable to this issue.", "threat_severity": "Moderate"}