Red Hat Enterprise Linux 8.6 Extended Update Support update for glibc
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2023-4806 CVE-2023-4813 |
| CWE-ID | CWE-416 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support Operating systems & Components / Operating system Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux for ARM 64 - Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux Server - TUS Operating systems & Components / Operating system Red Hat Enterprise Linux for Power, little endian - Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux for IBM z Systems - Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux Server - AUS Operating systems & Components / Operating system Red Hat Enterprise Linux for x86_64 - Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions Operating systems & Components / Operating system package or component glibc (Red Hat package) Operating systems & Components / Operating system package or component |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Use-after-free
EUVDB-ID: #VU81447
Risk: Medium
CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2023-4806
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows an attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the getaddrinfo() function. A remote attacker can perform a denial of service (DoS) attack.
Install updates from vendor's website.
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support: 8.6
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support: 8.6
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 8.6
Red Hat Enterprise Linux for ARM 64 - Extended Update Support: 8.6
Red Hat Enterprise Linux Server - TUS: 8.6
Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 8.6
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support: 8.6
Red Hat Enterprise Linux Server - AUS: 8.6
Red Hat Enterprise Linux for x86_64 - Extended Update Support: 8.6
glibc (Red Hat package): before 2.28-189.8.el8_6
CPE2.3- cpe:2.3:o:red_hat:red_hat_codeready_linux_builder_for_power_little_endian_-_extended_update_support:8.6:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_codeready_linux_builder_for_x86_64_-_extended_update_support:8.6:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:red_hat_enterprise_linux_server_for_ibm_power_le_-_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_arm_64_-_extended_update_support:8.6:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_-_tus:8.6:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_little_endian_-_extended_update_support:8.6:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_ibm_z_systems_-_extended_update_support:8.6:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_-_aus:8.6:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_x86_64_-_extended_update_support:8.6:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:glibc_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2023:7409
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Use-after-free
EUVDB-ID: #VU81453
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2023-4813
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the gaih_inet() function when the getaddrinfo() function is called and the hosts database in
/etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
Install updates from vendor's website.
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support: 8.6
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support: 8.6
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 8.6
Red Hat Enterprise Linux for ARM 64 - Extended Update Support: 8.6
Red Hat Enterprise Linux Server - TUS: 8.6
Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 8.6
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support: 8.6
Red Hat Enterprise Linux Server - AUS: 8.6
Red Hat Enterprise Linux for x86_64 - Extended Update Support: 8.6
glibc (Red Hat package): before 2.28-189.8.el8_6
CPE2.3- cpe:2.3:o:red_hat:red_hat_codeready_linux_builder_for_power_little_endian_-_extended_update_support:8.6:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_codeready_linux_builder_for_x86_64_-_extended_update_support:8.6:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:red_hat_enterprise_linux_server_for_ibm_power_le_-_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_arm_64_-_extended_update_support:8.6:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_-_tus:8.6:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_little_endian_-_extended_update_support:8.6:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_ibm_z_systems_-_extended_update_support:8.6:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_-_aus:8.6:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_x86_64_-_extended_update_support:8.6:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:glibc_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2023:7409
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
