Vulnerability Details : CVE-2023-4806
A flaw was found 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.
Products affected by CVE-2023-4806
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_eus:8.8:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_eus:9.2:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:9.2:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.2_ppc64le:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.8_ppc64le:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.2_ppc64le:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0_ppc64le:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.8_s390x:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0_s390x:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_tus:8.8:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus_s390x:9.2:*:*:*:*:*:*:*
- Redhat » Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions » Version: 9.2 Ppc64lecpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:9.2_ppc64le:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems:9.0_s390x:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:codeready_linux_builder_eus:9.2:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:codeready_linux_builder_eus_for_power_little_endian:9.0_ppc64le:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:9.2_aarch64:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems_eus:9.2_s390x:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_arm_64:9.0_aarch64:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_arm_64_eus:9.2_aarch64:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_s390x:9.2:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:codeready_linux_builder_for_arm64:9.0_aarch64:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:codeready_linux_builder_eus_for_power_little_endian_eus:9.2_ppc64le:*:*:*:*:*:*:*
- cpe:2.3:a:gnu:glibc:2.33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-4806
1.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 77 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-4806
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.9
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.2
|
3.6
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.2
|
3.6
|
Red Hat, Inc. |
CWE ids for CVE-2023-4806
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2023-4806
-
https://security.netapp.com/advisory/ntap-20240125-0008/
CVE-2023-4806 GNU C Library (glibc) Vulnerability in NetApp Products | NetApp Product Security
-
http://www.openwall.com/lists/oss-security/2023/10/03/8
oss-security - Re: CVE-2023-4806, CVE-2023-5156: glibc: potential use-after-free in getaddrinfo()Mailing List
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL/
[SECURITY] Fedora 37 Update: glibc-2.36-14.fc37 - package-announce - Fedora Mailing-ListsMailing List
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/
[SECURITY] Fedora 38 Update: glibc-2.37-10.fc38 - package-announce - Fedora Mailing-ListsMailing List
-
https://access.redhat.com/errata/RHSA-2023:5453
RHSA-2023:5453 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://access.redhat.com/security/cve/CVE-2023-4806
CVE-2023-4806- Red Hat Customer PortalThird Party Advisory
-
https://access.redhat.com/errata/RHSA-2023:5455
RHSA-2023:5455 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://www.openwall.com/lists/oss-security/2023/10/03/4
oss-security - CVE-2023-4806, CVE-2023-5156: glibc: potential use-after-free in getaddrinfo()Mailing List
-
https://bugzilla.redhat.com/show_bug.cgi?id=2237782
2237782 – (CVE-2023-4806) CVE-2023-4806 glibc: potential use-after-free in getaddrinfo()Issue Tracking;Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2023/10/03/6
oss-security - Re: CVE-2023-4806, CVE-2023-5156: glibc: potential use-after-free in getaddrinfo()Mailing List
-
https://access.redhat.com/errata/RHSA-2023:7409
RHSA-2023:7409 - Security Advisory - Red Hat Customer Portal
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA/
[SECURITY] Fedora 39 Update: glibc-2.38-6.fc39 - package-announce - Fedora Mailing-ListsMailing List
-
https://security.gentoo.org/glsa/202310-03
glibc: Multiple vulnerabilities (GLSA 202310-03) — Gentoo securityThird Party Advisory
-
http://www.openwall.com/lists/oss-security/2023/10/03/5
oss-security - Re: CVE-2023-4806, CVE-2023-5156: glibc: potential use-after-free in getaddrinfo()Mailing List
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