{"cve":"CVE-2023-4527","nvd":{"published":"2023-09-18T17:15:55.067","modified":"2026-06-17T06:38:01.153","status":"Modified","description":"A flaw was found in glibc. When the getaddrinfo function is called with the AF_UNSPEC address family and the system is configured with no-aaaa mode via /etc/resolv.conf, a DNS response via TCP larger than 2048 bytes can potentially disclose stack contents through the function returned address data, and may cause a crash.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H","score":6.5},"cwes":["CWE-125","CWE-121"],"references":["https://access.redhat.com/errata/RHSA-2023:5453","https://access.redhat.com/errata/RHSA-2023:5455","https://access.redhat.com/security/cve/CVE-2023-4527","https://bugzilla.redhat.com/show_bug.cgi?id=2234712","http://www.openwall.com/lists/oss-security/2023/09/25/1"],"products":["fedoraproject:fedora","gnu:glibc","netapp:h300s_firmware","netapp:h410c_firmware","netapp:h410s_firmware","netapp:h500s_firmware","netapp:h700s_firmware","redhat:codeready_linux_builder_eus","redhat:codeready_linux_builder_eus_for_power_little_endian","redhat:codeready_linux_builder_eus_for_power_little_endian_eus","redhat:codeready_linux_builder_for_arm64","redhat:codeready_linux_builder_for_arm64_eus","redhat:codeready_linux_builder_for_ibm_z_systems","redhat:codeready_linux_builder_for_ibm_z_systems_eus","redhat:enterprise_linux","redhat:enterprise_linux_eus","redhat:enterprise_linux_for_arm_64","redhat:enterprise_linux_for_arm_64_eus","redhat:enterprise_linux_for_ibm_z_systems","redhat:enterprise_linux_for_ibm_z_systems_eus","redhat:enterprise_linux_for_ibm_z_systems_eus_s390x","redhat:enterprise_linux_for_ibm_z_systems_s390x","redhat:enterprise_linux_for_power_little_endian","redhat:enterprise_linux_for_power_little_endian_eus","redhat:enterprise_linux_server_aus","redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions","redhat:enterprise_linux_tus"],"source":"nvd","synced_at":"2026-10-19T21:39:24.235896374+00:00"},"epss":{"cve":"CVE-2023-4527","score":0.01669,"percentile":0.76786,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}