CVE catalog
CVE-2023-4527
glibc: CVE-2023-4527
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.67% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | glibc | sid | 2.43-7 | fixed |
| Debian | glibc | forky | 2.43-7 | fixed |
| Debian | glibc | trixie | 2.41-12+deb13u4 | fixed |
| Debian | glibc | bookworm | 2.36-9+deb12u14 | fixed |
| Debian | glibc | bookworm-security | 2.36-9+deb12u7 | fixed |
| Opensuse | glibc | tumbleweed | 2.38-3.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | glibc | source | sid | 2.37-9 | not yet assigned | Not reported | [1051958] |
| Debian | glibc | source | forky | 2.37-9 | not yet assigned | Not reported | [1051958] |
| Debian | glibc | source | trixie | 2.37-9 | not yet assigned | Not reported | [1051958] |
| Debian | glibc | source | bookworm | 2.36-9+deb12u3 | not yet assigned | Not reported | [1051958] |
| Opensuse | glibc | rpm | tumbleweed | 2.38-3.1 | Not reported | OPENSUSE-SU-2024:13273-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://cert-portal.siemens.com/productcert/csaf/ssa-831302.json]
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2023_5455.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-4527]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:13273-1]
- [https://security-tracker.debian.org/tracker/CVE-2023-4527]
- [https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-4527.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-2384.json]
[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]