CVE-2023-4806

MEDIUM

5.9

Description

A flaw has been identified 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.

CVE Details

CVSS v3.1 Score5.9

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published9/18/2023

Last Modified9/26/2025

Sourcenvd

Honeypot Sightings0

Affected Products

fedoraproject:fedoragnu:glibcredhat:codeready_linux_builder_eusredhat:codeready_linux_builder_eus_for_power_little_endianredhat:codeready_linux_builder_eus_for_power_little_endian_eusredhat:codeready_linux_builder_for_arm64redhat:codeready_linux_builder_for_arm64_eusredhat:codeready_linux_builder_for_ibm_z_systemsredhat:codeready_linux_builder_for_ibm_z_systems_eusredhat:enterprise_linuxredhat:enterprise_linux_eusredhat:enterprise_linux_for_arm_64redhat:enterprise_linux_for_arm_64_eusredhat:enterprise_linux_for_ibm_z_systemsredhat:enterprise_linux_for_ibm_z_systems_eusredhat:enterprise_linux_for_ibm_z_systems_eus_s390xredhat:enterprise_linux_for_ibm_z_systems_s390xredhat:enterprise_linux_for_power_little_endianredhat:enterprise_linux_for_power_little_endian_eusredhat:enterprise_linux_server_ausredhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutionsredhat:enterprise_linux_tus

Weaknesses (CWE)

CWE-416CWE-416

References

https://access.redhat.com/errata/RHBA-2024:2413(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2023:5453(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2023:5455(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2023:7409(secalert@redhat.com)

https://access.redhat.com/security/cve/CVE-2023-4806(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2237782(secalert@redhat.com)

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(af854a3a-2127-422b-91ae-364da2661108)

https://access.redhat.com/errata/RHSA-2023:5455(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(af854a3a-2127-422b-91ae-364da2661108)

https://bugzilla.redhat.com/show_bug.cgi?id=2237782(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/(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.