Metrics
Affected Vendors & Products
Solution
No solution given by the vendor.
Workaround
For customers who cannot update immediately and do not have Secure Boot feature enabled, the issue can be mitigated using the provided SystemTap script with the following steps. When enabled, any setuid program invoked with GLIBC_TUNABLES in the environment will be terminated immediately. To invoke the setuid program, users will then have to unset or clear the GLIBC_TUNABLES envvar, e.g. `GLIBC_TUNABLES= sudo` . Note that these mitigation steps will need to be repeated if the system is rebooted. 1) Install required systemtap packages and dependencies as per - https://access.redhat.com/solutions/5441 2) Create the following systemtap script, and name it stap_block_suid_tunables.stp: ~~~ function has_tunable_string:long() { name = "GLIBC_TUNABLES" mm = @task(task_current())->mm; if (mm) { env_start = @mm(mm)->env_start; env_end = @mm(mm)->env_end; if (env_start != 0 && env_end != 0) while (env_end > env_start) { cur = user_string(env_start, ""); env_name = tokenize(cur, "="); if (env_name == name && tokenize("", "") != "") return 1; env_start += strlen (cur) + 1 } } return 0; } probe process("/lib*/ld*.so*").function("__tunables_init") { atsecure = 0; /* Skip processing if we can't read __libc_enable_secure, e.g. core dump handler (systemd-cgroups-agent and systemd-coredump). */ try { atsecure = @var("__libc_enable_secure"); } catch { printk (4, sprintf ("CVE-2023-4911: Skipped check: %s (%d)", execname(), pid())); } if (atsecure && has_tunable_string ()) raise (9); } ~~~ 3) Load the systemtap module into the running kernel: ~~~ stap -g -F -m stap_block_suid_tunables stap_block_suid_tunables.stp ~~~ 4) Ensure the module is loaded: ~~~ lsmod | grep -i stap_block_suid_tunables stap_block_suid_tunables 249856 0 ~~~ 5) Once the glibc package is updated to the version containing the fix, the systemtap generated kernel module can be removed by running: ~~~ rmmod stap_block_suid_tunables ~~~ If Secure Boot is enabled on a system, the SystemTap module must be signed. An external compiling server can be used to sign the generated kernel module with a key enrolled into the kernel's keyring or starting with SystemTap 4.7 you can sign a module without a compile server. See further information here - https://www.redhat.com/sysadmin/secure-boot-systemtap
Wed, 30 Jul 2025 02:15:00 +0000
Type | Values Removed | Values Added |
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Metrics |
ssvc
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ssvc
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Wed, 16 Jul 2025 13:45:00 +0000
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Metrics |
epss
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epss
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Wed, 30 Apr 2025 20:00:00 +0000
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References |
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Tue, 28 Jan 2025 16:15:00 +0000
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Metrics |
kev
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Mon, 27 Jan 2025 22:15:00 +0000
Type | Values Removed | Values Added |
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First Time appeared |
Netapp
Netapp h300s Netapp h300s Firmware Netapp h410c Netapp h410c Firmware Netapp h410s Netapp h410s Firmware Netapp h500s Netapp h500s Firmware Netapp h700s Netapp h700s Firmware Netapp ontap Select Deploy Administration Utility Redhat codeready Linux Builder Redhat codeready Linux Builder For Arm64 Redhat codeready Linux Builder For Ibm Z Systems Redhat codeready Linux Builder For Power Little Endian Redhat enterprise Linux For Arm 64 Redhat enterprise Linux For Ibm Z Systems Redhat enterprise Linux For Ibm Z Systems Eus Redhat enterprise Linux For Power Little Endian Redhat enterprise Linux For Power Little Endian Eus Redhat enterprise Linux Server For Power Little Endian Update Services For Sap Solutions |
|
CPEs | cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* cpe:2.3:a:redhat:codeready_linux_builder:9.0:*:*:*:*:*:*:* cpe:2.3:a:redhat:codeready_linux_builder_eus:9.2:*:*:*:*:*:*:* cpe:2.3:a:redhat:codeready_linux_builder_eus:9.4:*:*:*:*:*:*:* cpe:2.3:a:redhat:codeready_linux_builder_for_arm64:9.0_aarch64:*:*:*:*:*:*:* cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:9.2_aarch64:*:*:*:*:*:*:* cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:9.4_aarch64:*:*:*:*:*:*:* cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems:9.0_s390x:*:*:*:*:*:*:* cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems_eus:9.2_s390x:*:*:*:*:*:*:* cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems_eus:9.4_s390x:*:*:*:*:*:*:* cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian:9.0_ppc64le:*:*:*:*:*:*:* cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian_eus:9.2_ppc64le:*:*:*:*:*:*:* cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian_eus:9.4_ppc64le:*:*:*:*:*:*:* cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:* cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_eus:9.2:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_eus:9.4:*:*:*:*:*:*:* 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_arm_64_eus:9.4_aarch64:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:9.0_s390x:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:9.2_s390x:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:9.4_s390x:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.0_ppc64le:*:*:*:*:*:*:* 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:9.4_ppc64le:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_server_aus:9.2:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_server_aus:9.4:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:9.2_ppc64le:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:9.4_ppc64le:*:*:*:*:*:*:* |
|
Vendors & Products |
Netapp
Netapp h300s Netapp h300s Firmware Netapp h410c Netapp h410c Firmware Netapp h410s Netapp h410s Firmware Netapp h500s Netapp h500s Firmware Netapp h700s Netapp h700s Firmware Netapp ontap Select Deploy Administration Utility Redhat codeready Linux Builder Redhat codeready Linux Builder For Arm64 Redhat codeready Linux Builder For Ibm Z Systems Redhat codeready Linux Builder For Power Little Endian Redhat enterprise Linux For Arm 64 Redhat enterprise Linux For Ibm Z Systems Redhat enterprise Linux For Ibm Z Systems Eus Redhat enterprise Linux For Power Little Endian Redhat enterprise Linux For Power Little Endian Eus Redhat enterprise Linux Server For Power Little Endian Update Services For Sap Solutions |
Fri, 22 Nov 2024 12:00:00 +0000
Tue, 17 Sep 2024 20:00:00 +0000
Type | Values Removed | Values Added |
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First Time appeared |
Canonical
Canonical ubuntu Linux Debian Debian debian Linux |
|
CPEs | cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:* cpe:2.3:o:canonical:ubuntu_linux:23.04:*:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:13.0:*:*:*:*:*:*:* |
|
Vendors & Products |
Canonical
Canonical ubuntu Linux Debian Debian debian Linux |
Mon, 16 Sep 2024 14:45:00 +0000
Wed, 14 Aug 2024 01:00:00 +0000
Type | Values Removed | Values Added |
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References |
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2025-08-21T08:14:06.311Z
Reserved: 2023-09-12T13:10:32.495Z
Link: CVE-2023-4911

Updated: 2024-08-02T07:44:52.050Z

Status : Analyzed
Published: 2023-10-03T18:15:10.463
Modified: 2025-05-06T21:02:34.223
Link: CVE-2023-4911


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