Infinite loop in Unbound - CVE-2024-1931
Published: March 7, 2024
Vulnerability identifier: #VU87205
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-1931
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop in EDE support when trimming EDE text on
positive replies. A remote attacker can consume all available system resources and cause denial of service conditions.
Successful exploitation of the vulnerability requires enabled support for EDE (not a default option).
Affected software
Unbound
Fedora
Oracle Solaris
unbound
IBM Cloud Transformation Advisor
Fedora
Oracle Solaris
unbound
IBM Cloud Transformation Advisor
How to mitigate CVE-2024-1931
Install updates from vendor's website.
Unbound - update to 1.19.2
unbound - addressed in versions 1.19.1-4.fc40, 1.19.3-1.fc38, 1.19.3-1.fc39, 1.19.3-1.fc40, 1.19.3-1.fc41
IBM Cloud Transformation Advisor - update to 3.10.0
Oracle Solaris - update to 11.4 SRU 71
unbound - addressed in versions 1.19.1-4.fc40, 1.19.3-1.fc38, 1.19.3-1.fc39, 1.19.3-1.fc40, 1.19.3-1.fc41
IBM Cloud Transformation Advisor - update to 3.10.0
Oracle Solaris - update to 11.4 SRU 71