SUSE update for the Linux Kernel (Live Patch 3 for SLE 15 SP5)
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2023-4147 CVE-2023-4623 |
| CWE-ID | CWE-416 |
| Exploitation vector | Local |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software |
SUSE Linux Enterprise Micro Operating systems & Components / Operating system SUSE Linux Enterprise Live Patching Operating systems & Components / Operating system SUSE Linux Enterprise Server for SAP Applications 15 Operating systems & Components / Operating system SUSE Linux Enterprise Server 15 Operating systems & Components / Operating system SUSE Linux Enterprise Real Time 15 Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing 15 Operating systems & Components / Operating system openSUSE Leap Operating systems & Components / Operating system kernel-livepatch-SLE15-SP5_Update_3-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150500_55_19-default Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150500_55_19-default-debuginfo Operating systems & Components / Operating system package or component |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Use-after-free
EUVDB-ID: #VU79713
Risk: Low
CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]
CVE-ID: CVE-2023-4147
CWE-ID:
CWE-416 - Use After Free
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in Netfilter functionality when adding a rule with NFTA_RULE_CHAIN_ID. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
Update the affected package the Linux Kernel (Live Patch 3 for SLE 15 SP5) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Micro: 5.5
SUSE Linux Enterprise Live Patching: 15-SP5
SUSE Linux Enterprise Server for SAP Applications 15: SP5
SUSE Linux Enterprise Server 15: SP5
SUSE Linux Enterprise Real Time 15: SP5
SUSE Linux Enterprise High Performance Computing 15: SP5
openSUSE Leap: 15.5
kernel-livepatch-SLE15-SP5_Update_3-debugsource: before 3-150500.2.1
kernel-livepatch-5_14_21-150500_55_19-default: before 3-150500.2.1
kernel-livepatch-5_14_21-150500_55_19-default-debuginfo: before 3-150500.2.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_micro:5.5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_live_patching:15-SP5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_15:SP5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server_15:SP5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_real_time_15:SP5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_15:SP5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:opensuse_leap:15.5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:kernel-livepatch-sle15-sp5_update_3-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-livepatch-5_14_21-150500_55_19-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-livepatch-5_14_21-150500_55_19-default-debuginfo:*:*:*:*:*:suse_linux:*:*
http://www.suse.com/support/update/announcement/2023/suse-su-20234325-1/
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
2) Use-after-free
EUVDB-ID: #VU81664
Risk: Low
CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2023-4623
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the the Linux kernel net/sched: sch_hfsc (HFSC qdisc traffic control) component. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
Update the affected package the Linux Kernel (Live Patch 3 for SLE 15 SP5) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Micro: 5.5
SUSE Linux Enterprise Live Patching: 15-SP5
SUSE Linux Enterprise Server for SAP Applications 15: SP5
SUSE Linux Enterprise Server 15: SP5
SUSE Linux Enterprise Real Time 15: SP5
SUSE Linux Enterprise High Performance Computing 15: SP5
openSUSE Leap: 15.5
kernel-livepatch-SLE15-SP5_Update_3-debugsource: before 3-150500.2.1
kernel-livepatch-5_14_21-150500_55_19-default: before 3-150500.2.1
kernel-livepatch-5_14_21-150500_55_19-default-debuginfo: before 3-150500.2.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_micro:5.5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_live_patching:15-SP5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_15:SP5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server_15:SP5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_real_time_15:SP5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_15:SP5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:opensuse_leap:15.5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:kernel-livepatch-sle15-sp5_update_3-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-livepatch-5_14_21-150500_55_19-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-livepatch-5_14_21-150500_55_19-default-debuginfo:*:*:*:*:*:suse_linux:*:*
http://www.suse.com/support/update/announcement/2023/suse-su-20234325-1/
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
