Integer overflow in Unbound - CVE-2019-25033

Vulnerability identifier: #VU53034

CSH Severity: High

CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-25033

CWE-ID: CWE-190

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in regional allocator. A remote attacker can pass specially crafted data to the server via the ALIGN_UP macro, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Unbound
cflinuxfs3
Robotic Process Automation for Cloud Pak
SUSE CaaS Platform
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
SUSE Enterprise Storage
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Server
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise Realtime Extension
SUSE Linux Enterprise Module for Basesystem
Ubuntu
Red Hat OpenShift Container Platform
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
unbound (Ubuntu package)
libunbound2 (Ubuntu package)
libunbound2
unbound-devel
unbound-debugsource
unbound-debuginfo
unbound-anchor-debuginfo
unbound-anchor
libunbound2-debuginfo
unbound (Red Hat package)
libunbound8 (Ubuntu package)

Install updates from vendor's website.

Unbound - update to 1.9.5
cflinuxfs3 - update to 0.237.0
Red Hat OpenShift Container Platform - addressed in versions 4.12.50, 4.14.13
unbound (Ubuntu package) - addressed in versions 1.6.7-1ubuntu2.4, 1.9.4-2ubuntu1.2
libunbound2 (Ubuntu package) - update to 1.6.7-1ubuntu2.4
libunbound2 - addressed in versions 1.6.8-3.9.1, 1.6.8-10.6.1
unbound-devel - addressed in versions 1.6.8-3.9.1, 1.6.8-10.6.1
unbound-debugsource - addressed in versions 1.6.8-3.9.1, 1.6.8-10.6.1
unbound-debuginfo - addressed in versions 1.6.8-3.9.1, 1.6.8-10.6.1
unbound-anchor-debuginfo - addressed in versions 1.6.8-3.9.1, 1.6.8-10.6.1
unbound-anchor - addressed in versions 1.6.8-3.9.1, 1.6.8-10.6.1
libunbound2-debuginfo - addressed in versions 1.6.8-3.9.1, 1.6.8-10.6.1
unbound (Red Hat package) - update to 1.7.3-17.el8_6.1
libunbound8 (Ubuntu package) - update to 1.9.4-2ubuntu1.2
Robotic Process Automation for Cloud Pak - update to 21.0.6

• https://ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results/
• https://lists.debian.org/debian-lts-announce/2021/05/msg00007.html
• https://security.netapp.com/advisory/ntap-20210507-0007/

• Multiple vulnerabilities in Unbound DNS Server
• Cloud Foundry cflinuxfs3 update for Unboud
• Ubuntu update for unbound
• Multiple vulnerabilities in IBM Robotic Process Automation for Cloud Pak
• SUSE update for unbound
• SUSE update for unbound
• SUSE update for unbound
• Red Hat Enterprise Linux 8.6 Extended Update Support update for unbound
• Multiple vulnerabilities in OpenShift Container Platform 4.14
• Multiple vulnerabilities in Red Hat OpenShift Container Platform 4.12