Memory leak in DHCP - CVE-2022-2929

Vulnerability identifier: #VU67943

CSH Severity: Medium

CVSS v4: 7.1 [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]

CVE-ID: CVE-2022-2929

CWE-ID: CWE-401

Exploitation vector: Adjecent network

Exploit availability: No public exploit available

The 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.

DHCP
Oracle Linux
Gentoo Linux
Debian Linux
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Manager Proxy
SUSE Enterprise Storage
IBM i
Red Hat Enterprise Linux for IBM z Systems
Anolis OS
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Oracle Solaris
SUSE Linux Enterprise Server for SAP Applications
SUSE Linux Enterprise Server
SUSE Linux Enterprise Software Development Kit
Slackware Linux
Ubuntu
SUSE Linux Enterprise Desktop
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Module for Basesystem
SUSE Linux Enterprise Module for Server Applications
openSUSE Leap
openEuler
Fedora
Multicluster Engine for Kubernetes
Dell EMC PowerProtect Data Protection
SmartFabric OS10
Red Hat OpenShift Container Platform
HPE Moonshot 1500 Chassis Manager
RecoverPoint for Virtual Machines
isc-dhcp-server (Ubuntu package)
isc-dhcp-client (Ubuntu package)
dhcp-server-debuginfo
dhcp-server
dhcp-relay-debuginfo
dhcp-relay
dhcp-client-debuginfo
dhcp-client
dhcp
dhcp-devel
dhcp-debuginfo
dhcp-debugsource
dhcp-doc
dhcp (Red Hat package)
dhcp-libs
dhcp-common
dhcp-devel-doc
isc-dhcp (Debian package)
dhcp-help
Dell EMC NetWorker vProxy

Install updates from vendor's website.

DHCP - addressed in versions 4.1-ESV-R16-P2, 4.4.3-P1
Multicluster Engine for Kubernetes - addressed in versions 2.0.9, 2.1.7, 2.2.4
Dell EMC PowerProtect Data Protection - update to 2.7.8
Red Hat OpenShift Container Platform - update to 4.13.2
RecoverPoint for Virtual Machines - update to 6.0 SP2 P1
isc-dhcp-server (Ubuntu package) - addressed in versions Ubuntu Pro (Infra-only), 4.3.5-3ubuntu7.4, 4.4.1-2.1ubuntu5.20.04.4, 4.4.1-2.3ubuntu2.3
isc-dhcp-client (Ubuntu package) - addressed in versions Ubuntu Pro (Infra-only), 4.3.5-3ubuntu7.4, 4.4.1-2.1ubuntu5.20.04.4, 4.4.1-2.3ubuntu2.3
HPE Moonshot 1500 Chassis Manager - update to 4.0-b43
Dell EMC NetWorker vProxy - update to 4.3.0-40
dhcp-server-debuginfo - addressed in versions 4.3.3-10.28.1, 4.3.6.P1-150000.6.17.1
dhcp-server - addressed in versions 4.3.3-10.28.1, 4.3.6.P1-150000.6.17.1
dhcp-relay-debuginfo - addressed in versions 4.3.3-10.28.1, 4.3.6.P1-150000.6.17.1
dhcp-relay - addressed in versions 4.3.3-10.28.1, 4.3.6.P1-150000.6.17.1
dhcp-client-debuginfo - addressed in versions 4.3.3-10.28.1, 4.3.6.P1-150000.6.17.1
dhcp-client - addressed in versions 4.3.3-10.28.1, 4.3.6.P1-150000.6.17.1
dhcp - addressed in versions 4.3.3-10.28.1, 4.3.6.P1-150000.6.17.1
dhcp-devel - addressed in versions 4.3.3-10.28.1, 4.3.6.P1-150000.6.17.1
dhcp-debuginfo - addressed in versions 4.3.3-10.28.1, 4.3.6.P1-150000.6.17.1
dhcp-debugsource - addressed in versions 4.3.3-10.28.1, 4.3.6.P1-150000.6.17.1
dhcp-doc - update to 4.3.6.P1-150000.6.17.1
dhcp (Red Hat package) - addressed in versions 4.3.6-49.el8, 4.4.2-18.b1.el9
dhcp-server - update to 4.3.6-49.0.1
dhcp-libs - update to 4.3.6-49.0.1
dhcp-common - update to 4.3.6-49.0.1
dhcp-devel-doc - update to 4.3.6-49.0.1
dhcp-relay - update to 4.3.6-49.0.1
dhcp-client - update to 4.3.6-49.0.1
isc-dhcp (Debian package) - update to 4.4.1-2.3+deb11u1
dhcp-debuginfo - update to 4.4.2-9
dhcp-devel - update to 4.4.2-9
dhcp-help - update to 4.4.2-9
dhcp - update to 4.4.2-9
dhcp-debugsource - update to 4.4.2-9
dhcp - update to 4.4.3_P1
dhcp - addressed in versions 4.4.3-4.P1.fc35, 4.4.3-4.P1.fc36, 4.4.3-4.P1.fc37, 4.4.3-4.P1.fc38
SmartFabric OS10 - update to 10.5.6.1

• https://kb.isc.org/docs/cve-2022-2929

• Multiple vulnerabilities in ISC DHCP
• Ubuntu update for isc-dhcp
• Slackware Linux update for dhcp
• Debian update for isc-dhcp
• Ubuntu update for isc-dhcp
• SUSE update for dhcp
• SUSE update for dhcp
• Ubuntu update for isc-dhcp
• Multiple vulnerabilities in IBM i
• Multiple vulnerabilities in Oracle Solaris
• Gentoo update for ISC DHCP
• Red Hat Enterprise Linux 9 update for dhcp
• Red Hat Enterprise Linux 8 update for dhcp
• Multiple vulnerabilities in Oracle Linux
• Multiple vulnerabilities in Multicluster Engine for Kubernetes 2.2
• Multiple vulnerabilities in Multicluster Engine for Kubernetes 2.1
• Multiple vulnerabilities in Multicluster Engine for Kubernetes 2.0
• Multiple vulnerabilities in Dell NetWorker vProxy
• Multiple vulnerabilities in Red Hat OpenShift Container Platform release 4.13
• openEuler update for dhcp
• Multiple vulnerabilities in Dell Networking OS10
• Multiple vulnerabilities in HPE Moonshot 1500 Chassis Manager
• Fedora 38 update for dhcp
• Fedora 37 update for dhcp
• Fedora 36 update for dhcp
• Fedora 35 update for dhcp
• Anolis OS update for dhcp
• PowerProtect Data Protection software update for third-party components
• Dell RecoverPoint for Virtual Machines update for third-party components