SUSE update for dhcp
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2022-2928 CVE-2022-2929 |
| CWE-ID | CWE-20 CWE-401 |
| Exploitation vector | Local network |
| Public exploit | N/A |
| Vulnerable software |
SUSE Enterprise Storage Operating systems & Components / Operating system SUSE Manager Retail Branch Server Operating systems & Components / Operating system SUSE Manager Server Operating systems & Components / Operating system SUSE Manager Proxy Operating systems & Components / Operating system SUSE Linux Enterprise Module for Basesystem Operating systems & Components / Operating system SUSE Linux Enterprise Desktop Operating systems & Components / Operating system openSUSE Leap Operating systems & Components / Operating system SUSE Linux Enterprise Server for SAP Applications Operating systems & Components / Operating system SUSE Linux Enterprise Server Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing Operating systems & Components / Operating system SUSE Linux Enterprise Module for Server Applications Operating systems & Components / Operating system dhcp-server-debuginfo Operating systems & Components / Operating system package or component dhcp-server Operating systems & Components / Operating system package or component dhcp-relay-debuginfo Operating systems & Components / Operating system package or component dhcp-relay Operating systems & Components / Operating system package or component dhcp-doc Operating systems & Components / Operating system package or component dhcp-devel Operating systems & Components / Operating system package or component dhcp-debugsource Operating systems & Components / Operating system package or component dhcp-debuginfo Operating systems & Components / Operating system package or component dhcp-client-debuginfo Operating systems & Components / Operating system package or component dhcp-client Operating systems & Components / Operating system package or component dhcp Operating systems & Components / Operating system package or component |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Input validation error
EUVDB-ID: #VU67944
Risk: Low
CVSSv4.0: 2.3 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2022-2928
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an error related to the way processing lease queries are processed by the DHCP server. With a DHCP server configured with "allow leasequery;" a remote attacker can send lease queries for the same lease multiple times, leading to the "add_option()" function being repeatedly called. This can cause an option's "refcount" field to overflow and the server to abort.
MitigationUpdate the affected package dhcp to the latest version.
Vulnerable software versionsSUSE Enterprise Storage: 7.1
SUSE Manager Retail Branch Server: 4.2 - 4.3
SUSE Manager Server: 4.2 - 4.3
SUSE Manager Proxy: 4.2 - 4.3
SUSE Linux Enterprise Module for Basesystem: 15-SP3 - 15-SP4
SUSE Linux Enterprise Desktop: 15-SP3 - 15-SP4
openSUSE Leap: 15.3 - 15.4
SUSE Linux Enterprise Server for SAP Applications: 15-SP3 - 15-SP4
SUSE Linux Enterprise Server: 15-SP3 - 15-SP4
SUSE Linux Enterprise High Performance Computing: 15-SP3 - 15-SP4
SUSE Linux Enterprise Module for Server Applications: 15-SP3 - 15-SP4
dhcp-server-debuginfo: before 4.3.6.P1-150000.6.17.1
dhcp-server: before 4.3.6.P1-150000.6.17.1
dhcp-relay-debuginfo: before 4.3.6.P1-150000.6.17.1
dhcp-relay: before 4.3.6.P1-150000.6.17.1
dhcp-doc: before 4.3.6.P1-150000.6.17.1
dhcp-devel: before 4.3.6.P1-150000.6.17.1
dhcp-debugsource: before 4.3.6.P1-150000.6.17.1
dhcp-debuginfo: before 4.3.6.P1-150000.6.17.1
dhcp-client-debuginfo: before 4.3.6.P1-150000.6.17.1
dhcp-client: before 4.3.6.P1-150000.6.17.1
dhcp: before 4.3.6.P1-150000.6.17.1
CPE2.3- cpe:2.3:o:suse:suse_enterprise_storage:7.1:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_manager_retail_branch_server:4.2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_manager_retail_branch_server:4.3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_manager_server:4.2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_manager_server:4.3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_manager_proxy:4.2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_manager_proxy:4.3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_module_for_basesystem:15-SP3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_module_for_basesystem:15-SP4:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_desktop:15-SP3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:opensuse_leap:15.3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications:15-SP3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server:15-SP3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-SP3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_module_for_server_applications:15-SP3:*:*:*:*:*:*:*
- cpe:2.3:a:suse:dhcp-server-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-server:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-relay-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-relay:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-doc:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-devel:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-client-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-client:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2022/suse-su-20223991-1/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Memory leak
EUVDB-ID: #VU67943
Risk: Medium
CVSSv4.0: 4.9 [CVSS:4.0/AV:A/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-2022-2929
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak within the fqdn_universe_decode() function when processing DHCP packets with DNS labels. A remote attacker can send specially crafted DHCP packets to the affected server, trigger memory leak and perform denial of service attack.
MitigationUpdate the affected package dhcp to the latest version.
Vulnerable software versionsSUSE Enterprise Storage: 7.1
SUSE Manager Retail Branch Server: 4.2 - 4.3
SUSE Manager Server: 4.2 - 4.3
SUSE Manager Proxy: 4.2 - 4.3
SUSE Linux Enterprise Module for Basesystem: 15-SP3 - 15-SP4
SUSE Linux Enterprise Desktop: 15-SP3 - 15-SP4
openSUSE Leap: 15.3 - 15.4
SUSE Linux Enterprise Server for SAP Applications: 15-SP3 - 15-SP4
SUSE Linux Enterprise Server: 15-SP3 - 15-SP4
SUSE Linux Enterprise High Performance Computing: 15-SP3 - 15-SP4
SUSE Linux Enterprise Module for Server Applications: 15-SP3 - 15-SP4
dhcp-server-debuginfo: before 4.3.6.P1-150000.6.17.1
dhcp-server: before 4.3.6.P1-150000.6.17.1
dhcp-relay-debuginfo: before 4.3.6.P1-150000.6.17.1
dhcp-relay: before 4.3.6.P1-150000.6.17.1
dhcp-doc: before 4.3.6.P1-150000.6.17.1
dhcp-devel: before 4.3.6.P1-150000.6.17.1
dhcp-debugsource: before 4.3.6.P1-150000.6.17.1
dhcp-debuginfo: before 4.3.6.P1-150000.6.17.1
dhcp-client-debuginfo: before 4.3.6.P1-150000.6.17.1
dhcp-client: before 4.3.6.P1-150000.6.17.1
dhcp: before 4.3.6.P1-150000.6.17.1
CPE2.3- cpe:2.3:o:suse:suse_enterprise_storage:7.1:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_manager_retail_branch_server:4.2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_manager_retail_branch_server:4.3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_manager_server:4.2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_manager_server:4.3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_manager_proxy:4.2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_manager_proxy:4.3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_module_for_basesystem:15-SP3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_module_for_basesystem:15-SP4:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_desktop:15-SP3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:opensuse_leap:15.3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications:15-SP3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server:15-SP3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-SP3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_module_for_server_applications:15-SP3:*:*:*:*:*:*:*
- cpe:2.3:a:suse:dhcp-server-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-server:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-relay-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-relay:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-doc:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-devel:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-client-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp-client:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:dhcp:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2022/suse-su-20223991-1/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
