CVE-2023-4911
HighActively exploited (CISA KEV)
Description
A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.
SeverityHigh
CVSS7.8
Exploit probability—
Product
GNU C Library
PublishedOct 3, 2023
First seenOct 3, 2023
Added to KEVNov 21, 2023
Weakness typeCWE-122CWE-122
How to fix
CISA required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA due date: Dec 12, 2023Update
- gnu glibc2.39 or later
- siemens simatic_s7-1500_tm_mfp_firmware1.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gnu glibc | 2.34 ≤ v < 2.39 | 2.39 |
| netapp bootstrap_os | No range specified | — |
| siemens simatic_s7-1500_cpu_1518-4_pn\/dp_mfp_firmware | 3.1.5 ≤ v | — |
| siemens simatic_s7-1500_cpu_1518f-4_pn\/dp_mfp_firmware | 3.1.5 ≤ v | — |
| siemens siplus_s7-1500_cpu_1518-4_pn\/dp_mfp_firmware | 3.1.5 ≤ v | — |
| siemens simatic_s7-1500_tm_mfp_firmware | v < 1.1 | 1.1 |
| fedoraproject fedora | 37, 38, 39 | — |
| redhat codeready_linux_builder | 9.0 | — |
| redhat codeready_linux_builder_eus | 8.6, 9.2, 9.4, 9.6 | — |
| redhat codeready_linux_builder_for_arm64 | 9.0_aarch64 | — |
| redhat codeready_linux_builder_for_arm64_eus | 8.6, 9.2_aarch64, 9.4_aarch64, 9.6_aarch64 | — |
| redhat codeready_linux_builder_for_ibm_z_systems | 9.0_s390x | — |
| redhat codeready_linux_builder_for_ibm_z_systems_eus | 8.6, 9.2_s390x, 9.4_s390x, 9.6_s390x | — |
| redhat codeready_linux_builder_for_power_little_endian | 9.0_ppc64le | — |
| redhat codeready_linux_builder_for_power_little_endian_eus | 8.6, 9.2_ppc64le, 9.4_ppc64le, 9.6_ppc64le | — |
| redhat virtualization | 4.0 | — |
| redhat virtualization_host | 4.0 | — |
| redhat enterprise_linux | 8.0, 9.0 | — |
| redhat enterprise_linux_eus | 8.6, 9.2, 9.4, 9.6 | — |
| redhat enterprise_linux_for_arm_64 | 9.0_aarch64 | — |
| redhat enterprise_linux_for_arm_64_eus | 8.6_aarch64, 9.2_aarch64, 9.4_aarch64, 9.6_aarch64 | — |
| redhat enterprise_linux_for_ibm_z_systems | 9.0_s390x | — |
| redhat enterprise_linux_for_ibm_z_systems_eus | 9.2_s390x, 9.4_s390x, 9.6_s390x | — |
| redhat enterprise_linux_for_ibm_z_systems_eus_s390x | 8.6 | — |
| redhat enterprise_linux_for_power_big_endian_eus | 8.6_ppc64le | — |
| redhat enterprise_linux_for_power_little_endian | 9.0_ppc64le | — |
| redhat enterprise_linux_for_power_little_endian_eus | 9.2_ppc64le, 9.4_ppc64le, 9.6_ppc64le | — |
| redhat enterprise_linux_server_aus | 8.6, 9.2, 9.4, 9.6 | — |
| redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 9.2_ppc64le, 9.4_ppc64le, 9.6_ppc64le | — |
| redhat enterprise_linux_server_tus | 8.6 | — |
| redhat enterprise_linux_update_services_for_sap_solutions | 9.2, 9.4, 9.6 | — |
| canonical ubuntu_linux | 22.04, 23.04 | — |
| debian debian_linux | 11.0, 12.0 | — |
| netapp h410c_firmware | No range specified | — |
| netapp h300s_firmware | No range specified | — |
| netapp h500s_firmware | No range specified | — |
| netapp h700s_firmware | No range specified | — |
| netapp h410s_firmware | No range specified | — |
| netapp ontap_select_deploy_administration_utility | No range specified | — |
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