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CVE-2023-4527

Glibc: stack read overflow in getaddrinfo in no-aaaa mode

Published: 9/18/2023 Last updated: 11/20/2025 Reserved: 8/24/2023

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.

CNA assigner: redhat (53f830b8-0a3f-465b-8143-3b8a9948e749) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 6.5 Medium CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H

Opam packages affected (1)

gettext-stub

Products affected (16)

Product Vendor Version
Red Hat Enterprise Linux 6 Red Hat < 3393fddbfa947c8e1fdcc4509226905ffffd8b89
Red Hat Enterprise Linux 7 Red Hat <= *
Red Hat Enterprise Linux 7 Red Hat < ea7e2d5e49c05e5db1922387b09ca74aa40f46e2
Red Hat Enterprise Linux 6 Red Hat <= 6.13.*
Red Hat Enterprise Linux 6 Red Hat <= 6.14.*
Red Hat Enterprise Linux 7 Red Hat < a45d6359eefb41e08d374a3260b10bff5626823b
Red Hat Enterprise Linux 8 Red Hat <= 6.6.*
Red Hat Enterprise Linux 8 Red Hat <= 6.10.*
Red Hat Enterprise Linux 9 Red Hat < 0f910dbf2f2a4a7820ba4bac7b280f7108aa05b1
Red Hat Enterprise Linux 9 Red Hat < 49d3a4ad57c57227c3b0fd6cd4188b2a5ebd6178
Red Hat Enterprise Linux 6 Red Hat < ce14f38d6ee9e88e37ec28427b4b93a7c33c70d3
Red Hat Enterprise Linux 8 Red Hat <= 5.15.*
Red Hat Enterprise Linux 7 Red Hat 097f98edde717ce09f217d8a285fe357dcd29fd1
Red Hat Enterprise Linux 8 Red Hat <= 6.1.*
Red Hat Enterprise Linux 9 Red Hat <= 6.6.*
Red Hat Enterprise Linux 9 Red Hat <= 6.12.*

References (28)

Credits (2)