An update for dhcp is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3 and openEuler-22.03-LTS Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2022-2009 Final 1.0 1.0 2022-10-21 Initial 2022-10-21 2022-10-21 openEuler SA Tool V1.0 2022-10-21 dhcp security update An update for dhcp is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3 and openEuler-22.03-LTS. The Dynamic Host Configuration Protocol (DHCP) is a network management protocol used on UDP/IP networks whereby a DHCP server dynamically assigns an IP address and other network configuration parameters to each device on a network so they can communicate with other IP networks. Security Fix(es): In ISC DHCP 4.4.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1, when the function option_code_hash_lookup() is called from add_option(), it increases the option's refcount field. However, there is not a corresponding call to option_dereference() to decrement the refcount field. The function add_option() is only used in server responses to lease query packets. Each lease query response calls this function for several options, so eventually, the reference counters could overflow and cause the server to abort.(CVE-2022-2928) In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system with access to a DHCP server, sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the server to run out of memory.(CVE-2022-2929) An update for dhcp is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3 and openEuler-22.03-LTS. openEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. High dhcp https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-2009 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2022-2928 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2022-2929 https://nvd.nist.gov/vuln/detail/CVE-2022-2928 https://nvd.nist.gov/vuln/detail/CVE-2022-2929 openEuler-20.03-LTS-SP1 openEuler-20.03-LTS-SP3 openEuler-22.03-LTS dhcp-debugsource-4.4.2-9.oe1.aarch64.rpm dhcp-debuginfo-4.4.2-9.oe1.aarch64.rpm dhcp-4.4.2-9.oe1.aarch64.rpm dhcp-devel-4.4.2-9.oe1.aarch64.rpm dhcp-devel-4.4.2-9.oe1.aarch64.rpm dhcp-debugsource-4.4.2-9.oe1.aarch64.rpm dhcp-4.4.2-9.oe1.aarch64.rpm dhcp-debuginfo-4.4.2-9.oe1.aarch64.rpm dhcp-debuginfo-4.4.2-15.oe2203.aarch64.rpm dhcp-debugsource-4.4.2-15.oe2203.aarch64.rpm dhcp-4.4.2-15.oe2203.aarch64.rpm dhcp-devel-4.4.2-15.oe2203.aarch64.rpm dhcp-help-4.4.2-9.oe1.noarch.rpm dhcp-help-4.4.2-9.oe1.noarch.rpm dhcp-help-4.4.2-15.oe2203.noarch.rpm dhcp-4.4.2-9.oe1.src.rpm dhcp-4.4.2-9.oe1.src.rpm dhcp-4.4.2-15.oe2203.src.rpm dhcp-devel-4.4.2-9.oe1.x86_64.rpm dhcp-4.4.2-9.oe1.x86_64.rpm dhcp-debugsource-4.4.2-9.oe1.x86_64.rpm dhcp-debuginfo-4.4.2-9.oe1.x86_64.rpm dhcp-debuginfo-4.4.2-9.oe1.x86_64.rpm dhcp-devel-4.4.2-9.oe1.x86_64.rpm dhcp-debugsource-4.4.2-9.oe1.x86_64.rpm dhcp-4.4.2-9.oe1.x86_64.rpm dhcp-debugsource-4.4.2-15.oe2203.x86_64.rpm dhcp-devel-4.4.2-15.oe2203.x86_64.rpm dhcp-debuginfo-4.4.2-15.oe2203.x86_64.rpm dhcp-4.4.2-15.oe2203.x86_64.rpm In ISC DHCP 4.4.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1, when the function option_code_hash_lookup() is called from add_option(), it increases the option s refcount field. However, there is not a corresponding call to option_dereference() to decrement the refcount field. The function add_option() is only used in server responses to lease query packets. Each lease query response calls this function for several options, so eventually, the reference counters could overflow and cause the server to abort. 2022-10-21 CVE-2022-2928 openEuler-20.03-LTS-SP1 openEuler-20.03-LTS-SP3 openEuler-22.03-LTS High 7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H dhcp security update 2022-10-21 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-2009 In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system with access to a DHCP server, sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the server to run out of memory. 2022-10-21 CVE-2022-2929 openEuler-20.03-LTS-SP1 openEuler-20.03-LTS-SP3 openEuler-22.03-LTS Medium 6.5 AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H dhcp security update 2022-10-21 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-2009